1
Lester Robert W: Radiant wave locating system. RCDS Enterprises, Greene & Durr, April 16, 1974: US3805265 (216 worldwide citation)

A radiant wave electronic locating system for automatically locating a select group of persons or objects within a selected area of surveillance. Room sensors and a central console are linked together by radiant wave energy signals, which as light waves, acoustic waves, ultrasonic waves, microwaves, ...


2
Closmann Philip J: Spreading-fluid recovery of subterranean oil. Shell Oil Company, Coryell H W, April 16, 1974: US3804169 (206 worldwide citation)

In a process for producing shale oil by circulating fluid through a cavity that contacts a subterranean oil shale, the cavity is extended laterally into both an injection well and a plurality of surrounding productions wells and the fluid is circulated at a rate causing the velocity within the cavit ...


3
Closmann Philip J, Suman Jr George O: Method for the recovery of oil from oil shale. Shell Oil Company, Coryell H W, April 16, 1974: US3804172 (204 worldwide citation)

Shale oil is recovered by forming a subterranean cavern that contacts an oil shale, packing the cavern with solid granules and removing organic and inorganic solids from the oil shale by circulating fluid from a surface location, into contact with the oil shale, through a mass of packed granules, an ...


4
Rothfjell Rolf Eric: Method for identifying individuals using selected characteristic body curves. Stevens Davis Miller & Mosher, April 16, 1974: US3805238 (151 worldwide citation)

A method for identifying individuals using selected characteristic body curves which are usually substantially constant characteristic facial curves derived from one or more images of the individual being identified. The curves may be used for visual comparison with an image of the individual in an ...


5
Rosenberg David J: Liquid-gas separator and filter. Pall Corporation, April 16, 1974: US3803810 (106 worldwide citation)

A filter unit that will not gas block is provided, capable of separating gases and liquids and of filtering liquids, and especially of removing and venting gases contained in liquids to be filtered, particularly liquids that must be filtered through a fine filter, such as in the filtration of bacter ...


6
Friedman Harry G: Body implantable lead. Medronic, Rappaport Irving S, Sivertson Wayne A, April 16, 1974: US3804098 (94 worldwide citation)

A body-implantable, bipolar lead for insertion in and guidance through a body vessel to a desired location inside the body. The lead comprises a pair of electrical conductors adapted to be connected at their proximal end to a source of electrical energy. The conductors are substantially covered with ...


7
Gaskell Philip Hedley, Tilley Brain Paterson, Irlam Philip Sidney, Miller Robert Percy, Barry Thomas Ian: Method for making glass ceramic materials. Pilkington Brothers, Burns Doane Swecker & Mathis, April 16, 1974: US3804608 (93 worldwide citation)

The invention relates to a method of manufacturing a fine-grained glass ceramic material from a thermally crystallisable vitreous material, which may be a composition of the SiO.sub.2 --Al.sub.2 O.sub.3 --Li.sub.2 O or SiO.sub.2 --Al.sub.2 O.sub.3 --BaO or SiO.sub.2 --Al.sub.2 O.sub.3 --MgO systems ...


8
Kinoshita Kunio, Itoh Mitsuto: Endoscope. Olympus Optical, Flynn & Frishauf, April 16, 1974: US3804081 (90 worldwide citation)

An endoscope comprising an object lens movable in the axial direction of the endoscope according to a varied distance between the observation end of the endoscope and the body cavity walls and a rotatable prism for transmitting reflections from the illuminated body cavity to the object lens whereby ...


9
Fariello Leonard Anthony: Smoking pipe. Skelly Joseph T, April 16, 1974: US3804100 (83 worldwide citation)

The device comprises a combustion chamber into which smoking material is disposed for burning, and has means for igniting the smoking material. A first conduit communicates the combustion chamber with a conduit-terminating mouthpiece, and a second conduit communicates the combustion chamber with an ...


10
Tunc Deger: Water dispersible nonwoven fabric. Johnson & Johnson, April 16, 1974: US3804092 (81 worldwide citation)

A water dispersible nonwoven fabric comprising one or more layers of overlapping, intersecting fibers and from about four percent to about thirty-five percent by weight of an alkali cellulose ether sulfate resin binder, said nonwoven fabric having good tensile strength and abrasion resistance in the ...