1
Schwartz Howard S: Method for detecting blockage or insufficiency of pancreatic exocrine function. March 6, 1973: US3719183 (134 worldwide citation)

A process for determining internal blockage to pancreatic enzyme flow in which an electronic capsule transponder has an insulative coating of material dissolvable by the action of predetermined enzyme secretions. When the coating is dissolved, the transponder is coated with the enzyme flow. The tran ...


2
Arcocha Humberto L, Dullabaun Paul W, Lauffer Fred E: Pallet assembly. Owens Illinois, March 6, 1973: US3719157 (76 worldwide citation)

A pallet assembly having an outer shell formed from sheet material. The outer shell provides a water-tight, moisture-resistant, and smooth outer surface. A stiffening assembly is positioned within the shell and reinforces the pallet assembly. The outer shell is formed of sheet material, preferably a ...


3
Streander George W: Laminated gear construction. Design Systems, March 6, 1973: US3719103 (73 worldwide citation)

A gear body including an edge portion of predetermined configuration and of laminated construction including a center ply of plastic material and a pair of opposite side plies constructed of more rigid material. The aforementioned edge portion of the gear body has gear teeth formed therein with each ...


4
Michels Lawrence S, Minka George F, Kovar Donald G, Harper Robert V: Credit control system. March 6, 1973: US3719927 (66 worldwide citation)

A credit control system which positively authorizes every credit purchase, furnishes account balance status and accumulates the dollar amount of every credit purchase. Customer account numbers, status, credit limit and account balance are stored in a magnetic memory. Remote keyboard units interrogat ...


5
Breitschwerdt Werner, Gmeiner Gunter, Grabner Christian, Sigmund Gerhard: Door lock, especially for motor vehicles. Daimler Benz Aktiengesellshaft, March 6, 1973: US3719248 (63 worldwide citation)

A door lock, especially for motor vehicles, which is equipped with a pull handle and with a device preventing movement caused by forces due to inertia of those parts of the door lock which are movable and have a significant weight; the device for preventing such movement includes, in addition to the ...


6
Vaillancourt Vincent L, Bohner Thomas H: Method of making a preformed curved epidural catheter. March 6, 1973: US3719737 (62 worldwide citation)

A length of polytetrafluoroethylene tubing is passed over a rigid curved mandrel and then heated to a temperature above approximately 620.degree.F to cause the tubing to become clear. The tubing is rapidly cooled to cause the tubing to set in a curved shape. The tubing is then removed from the mandr ...


7
Goodson William Eugene: Double sideband modem with either suppressed or transmitted carrier. Bell Telephone Laboratories Incorporated, March 6, 1973: US3719903 (61 worldwide citation)

An inexpensive, two-transistor modem wherein the first transistor is a high gain amplifier connected to receive the modulating signal, and the second transistor is connected as a shunt modulator driven by a carrier signal source. Individual resistors are connected with the collector and emitter elec ...


8
Bannister John D, Peters Joseph C, Jordan Michael: Liquids sampler with probe-bathing chamber. March 6, 1973: US3719086 (61 worldwide citation)

Clinical or like apparatus for introducing samples of liquids successively from plural liquid vessels into a conduit by means of a movable probe, has a probe-bathing fluid-containing system through which the probe slidably passes as it moves between the sampling and other positions. In the sampling ...


9
Merig Jr James J: Surgical instrument for placement of bone pins and holes therefor. University of Alabama in Birmingham, March 6, 1973: US3719186 (57 worldwide citation)

A surgical instrument for placement of bone pins and holes therefor having an outer cannula telescopically receiving an inner cannula which in turn telescopically receives a stylus. The outer cannula has symmetrically separable components and one end thereof engages a bone in which a hole is drilled ...


10
Wentz John L: Polarization independent light modulation means using birefringent crystals. Westinghouse Electric Corporation, March 6, 1973: US3719414 (50 worldwide citation)

A first optically birefringent crystal divides an incident randomly polarized light beam into two linearly polarized orthogonal components, namely, an ordinary ray and an extraordinary ray. The incident light beam is so related to the optic axis of the birefringent crystal that ordinary ray is undev ...