1
Richard Vance Crommett: Firearm having a new gas operating system. Bartels Law Group, Donald L Bartels, September 11, 2012: US08261653 (23 worldwide citation)

M-16/AR-15 firearms modified with a new gas operating system are described. The modification of the firearm with the new gas operating system has a forward mounted gas and recoil spring system in which high pressure propellant gases from the cartridge expand in the barrel and operate the firearm.


2
Ronald Quan, John O Ryan: Apparatus and method for transmitting a pulse width modulated audio signal on a video signal. Ampex Corporation, Donald L Bartels, George B Almeida, Joel D Talcott, June 1, 1982: US04333108 (14 worldwide citation)

A system for transmitting an audio signal in pulse width modulated form on a video signal is disclosed. The audio signal is modulated by varying the time occurance of at least one edge of a pulse as a function of the voltage level of said audio signal at a selected time. The pulse is then added to t ...


3
Mark F Heffington: Programmable automotive computer method and apparatus with accelerometer input. Hypertech, Donald L Bartels, Nixon Peabody, January 5, 2010: US07643912 (12 worldwide citation)

A device and corresponding method for enabling a user to accurately control, monitor, and evaluate performance of a vehicle. A portable programmable computer device that a user can readily plug into a diagnostic connector port of the vehicle for providing the controlling, monitoring, and evaluating ...


4
Mohamed Sherif Danish, Kris Walter Kimbrough: Display and search interface for product database. Kelora Systems, Donald L Bartels, Bartels Law Group, February 8, 2011: US07885956 (11 worldwide citation)

A technique for displaying and searching databases provides a user interface that displays a list of attribute values of a product along with corresponding user interface elements, each containing a set of clickable sub-elements corresponding to subsets of possible attribute values with different ra ...


5
Mohamed Sherif Danish, Kris Walter Kimbrough: Display and search interface for product database. Kelora Systems, Donald L Bartels, Bartels Law Group, June 26, 2012: US08209327 (10 worldwide citation)

A computer-implemented method for enabling a user to search for and display information stored in a searchable database of product records, including providing a user interface to the database for enabling data contained in the database to be displayed on the user's computer and for enabling user in ...


6
Bradley G Mountz, Daniel Ohlendorf, Yi Min Wu: Multi-scale mechanism. Mountz, Donald L Bartels, Bartels Law Group, July 30, 2013: US08495935 (5 worldwide citation)

A multi-scale mechanism comprising a rotatable driving shaft; a first scale mounted along the axis of said rotatable driving shaft, said scale including first and second sets of coarse scale divisions for indicating a coarse range of magnitude in two different systems of units as a function of the p ...


7
Richard Vance Crommett: Firearm having a new gas operating system. Donald L Bartels, Bartels Law Group, November 19, 2013: US08584575 (5 worldwide citation)

A method of operating a firearm having a modified gas operating system including directing gas from a barrel of a firearm upward through a barrel gas port, routing the gas from the barrel gas port through a gas jet, directing the gas from the gas jet through a gas operation tube, and directing the g ...


8
Eric F Morrison: Digital chrominance filter for digital component television system. Ampex Corporation, Donald L Bartels, George B Almeida, Joel D Talcott, December 6, 1983: US04419686 (5 worldwide citation)

A digital chrominance signal in a digital component television system is digitally filtered to obtain sampling values intermediate the sampled values obtained during analog to digital conversion of the chrominance signal, such that the resultant number of chrominance samples per second in the digiti ...


9
Evan Grund: Transmission line pulse measurement system for measuring the response of a device under test. Thermo Fisher Scientific, Nixon Peabody, Donald L Bartels, June 9, 2009: US07545152 (4 worldwide citation)

A Transmission Line Pulse (“TLP”) measurement system for testing devices such as integrated circuits (“ICs”), and especially for testing the electrostatic discharge (“ESD”) protection structures connected to terminals on such ICs. The TLP measurement system measures the pulsed voltage and/or current ...


10
Barbara E White: Convertible maternity coat. Donald L Bartels, Bartels Law Group, May 4, 2010: US07707651 (3 worldwide citation)

A two panel convertible maternity coat that can be used by a woman before, after, and during pregnancy, a pregnancy panel, and a baby panel. Pregnancy is accommodated through the addition of the pregnancy panel between the front sides of the coat. The pregnancy panel is wider at the bottom and taper ...