King Terry D, Mills Noel L: Shunt defect closure system. Alton Ochsner Medical Foundation, Pugh & Laiche, April 1, 1975: US3874388 (1208 worldwide citation)

A method and apparatus for closing off a septal defect or shunt in the intravascular system or the great vessels including a pair of opposed, umbrella-like elements locked together in face-to-face relationship on opposite sides of the septal defect, thereby closing it. The dual umbrella-like closure ...

Kano Tsuyoshi, Saitoh Tadashi, Suzuki Atsushi, Suzuki Teruki, Minagawa Shigekazu, Otomo Yoshiro: Multi-color semiconductor lamp. Hitachi, Stewart and Kolasch, April 1, 1975: US3875456 (337 worldwide citation)

A multi-color semiconductor lamp comprising a plurality of light emitting diodes disposed close to one another and respectively emitting the light of different colors and a light scattering layer covering these light emitting diodes.With this device, light emitted from any one of the plurality of li ...

Barbieri Pasquale P: Valved hemostatic pressure cap. Malin & Haley, April 1, 1975: US3874387 (232 worldwide citation)

A wound dressing of the occlusive type which may have a cap-shaped member which is placed over and connected to the skin about the wound to seal the wound from the surrounding atmosphere. The member has valves therein which, when opened, allow fluids to pass into or out of the wounded area, and, whe ...

Green Harold A, Merianos John J, Petrocci Alfonso N: Microbiocidal polymeric quarternary ammonium compounds. Millmaster Onyx Corporation, Jacobs Esq Arthur A, April 1, 1975: US3874870 (164 worldwide citation)

The use of polymeric quaternary ammonium compounds prepared by the condensation of 1,4-dihalo-2-butene and 1,4-bis-dimethylamino-2-butene as microbiocidal agents in aqueous systems.

Sorensen Soren Kai, Andersen Jorgen, Johansen Ebbe, Lund Jorgen Aage Preben: Blood analyzing method and apparatus. Radiometer, Burns Robert E, Lobato Emmanuel J, Adams Bruce L, April 1, 1975: US3874850 (145 worldwide citation)

An automatic blood sample analyzer for automatically measuring one or more unknown data or parameters of the blood samples, such as partial pressure of carbon dioxide, partial pressure of oxygen, the pH-value, and the hemoglobin concentration, and the analyzer comprises computer means for calculatin ...

Shapiro Gerald N, Sobel Herbert S: Pipeline signal processor. Raytheon Company, Sharkansky Richard M, McFarland Philip J, Pannone Joseph D, April 1, 1975: US3875391 (131 worldwide citation)

A signal processor including a programmable arithmetic controller and a pipeline arithmetic unit controlled by such controller is disclosed. The arithmetic unit includes a plurality of serially coupled processing levels. The arithmetic controller includes a corresponding plurality of serially couple ...

Young Niels O: Positive displacement scroll apparatus with axially radially compliant scroll member. Lepper Bessie A, April 1, 1975: US3874827 (113 worldwide citation)

A positive fluid displacement apparatus employing scroll members having interfitting spiroidal wraps angularly and radially offset such that as the spiral centers experience an orbiting motion, they define one or more moving fluid pockets of variable volume. The zones of lowest and highest pressures ...

Crocker Thomas H, Levitt Barry N: Inertially stabilized gimbal platform. Raytheon Company, Sharkansky Richard M, McFarland Philip J, Pannone Joseph D, April 1, 1975: US3875488 (108 worldwide citation)

An inertially stabilized gimbal platform is disclosed wherein the gyros used in such system operate about their mechanical null positions and control the gimbal drive means through an electronic control section. The electronic control section includes a control signal which is combined with the gyro ...

Nagel Robert H: Frame grabbing system. IDR, Hubbell Cohen & Stiefel, April 1, 1975: US3875329 (101 worldwide citation)

A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video display of information and a video display means from a plurality of different continuously transmitted frames of video information. The selected frame which i ...

Niebojewski Frank J: Exercise apparatus including stall bars and exercise equipment mounted thereon. Andrus Sceales Starke & Sawall, April 1, 1975: US3874657 (94 worldwide citation)

An exercise apparatus includes a basic stall bar unit and a pair of parallel bar units each having an attachment plate with a top hook for hooking over a stall bar and with the plate abutting the adjacent stall bars. A tubular parallel bar projects forwardly from each plate and a brace extends from ...