1
John W Boretos, Robert A Poirier: Aortic heart valve catheter. The United States of America represented by the Department of Health Education and Welfare, John S Roberts Jr, Norman J Latker, Thomas G Ferris, November 8, 1977: US04056854 (696 worldwide citation)

An artificial valve remotely placeable in a blood vessel without major surgery to supplant the function of a malfunctioning natural valve including an expansible check valve remotely placed in a constricted configuration through the vessel and a remotely removable constraint for selective expansion ...


2
Donald E Garrett: Process for in situ conversion of coal or the like into oil and gas. November 8, 1977: US04057293 (229 worldwide citation)

This application discloses a process for accomplishing in situ retorting of coal, or a similar hydrocarbon by constructing a substantially impervious retorting area, and then fragmenting the coal to provide a substantially homogeneous, porous mass. After pyrolysis due to the introduction of oxygen-c ...


3
Marvin Alden Genshaw: Test device and method for determining blood hemoglobin. Miles Laboratories, Joseph C Schwalbach, Roger Norman Coe, November 8, 1977: US04057394 (138 worldwide citation)

A test device and method are provided for determining the hemoglobin content of blood. The test device comprises a substantially opaque light reflecting matrix having a refractive index significantly different from the refractive index of blood. In use, a test sample of blood is contacted with the m ...


4
Richard G Sinclair: Copolymers of L-(-)-lactide and epsilon caprolactone. Gulf Oil Corporation, November 8, 1977: US04057537 (130 worldwide citation)

Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 75 parts by weight of L-(-)-lactide and ...


5
William P Lowell, Douglas M Jagunich: Remote controlled test interface unit. Sperry Rand Corporation, John B Sowell, Kenneth T Grace, Marshall M Truex, November 8, 1977: US04057847 (121 worldwide citation)

A universal remotely controlled test interface test unit is adapted to be connected through plug connections to an on-site computing system having one or more central processing units and associated peripheral equipment. The test interface unit is provided with a limited function keyboard control fo ...


6
Robert M Moorehead: Communications TV monitoring and control system. Spectradyne, Warren H Kintzinger, November 8, 1977: US04057829 (114 worldwide citation)

A communications control system applicable to an existing master antenna television (MATV) system normally installed in a building, or CATV systems that use special entertainment feature inputs including movies and/or sporting events and special services on a controlled pay or non-pay basis, as desi ...


7
Harry E Taylor: Catheter holder for securing a urethral catheter to a patient. Smith Harding Earley & Follmer, November 8, 1977: US04057066 (100 worldwide citation)

A catheter holder for securing a urethral catheter to a patient includes an anchoring strip with a pressure-sensitive adhesive layer on one side covered by a peel-off cover sheet. A cord passes through a pair of adjacent openings in the anchoring strip with the cord being tied to secure it to the an ...


8
Raymond E Johnson, Boris Ellison: Current carrier communication system. November 8, 1977: US04057793 (99 worldwide citation)

A current carrier communication system for selectively transmitting binary electrical signals from a first location to a second location over the AC power lines in a AC power distribution network in a building comprising a first tone generating means operatively connected to a first source of binary ...


9
G Bruce Thow: Percutaneous gastrointestinal tube. Dow Corning Corporation, Jack I Pulley, November 8, 1977: US04057065 (93 worldwide citation)

In accordance with a preferred embodiment of this invention, there is provided a percutaneous gastrointestinal tube which may be surgically inserted into the patient's stomach and then threaded downward into the intestine to provide body intestinal stent plication, and independently controllable gas ...


10
Thomas Z Lajos: Atrioventricular electrode. Diller Brown Ramik & Wight, November 8, 1977: US04057067 (83 worldwide citation)

This disclosure relates to an atrioventricular electrode for the purpose of electrically stimulating the heart, for example, in conjunction with a pacemaker. The atrioventricular electrode includes a ventricular component and an atrial component, both carried by a common body. The atrial component, ...