1
Higgins Gary H: Situ coal bed gasification. The United States of America represented by the United States Atomic, Horan John A, Robertson F A, Perona John, February 26, 1974: US3794116 (234 worldwide citation)

Deeply buried relatively thick coal bed formations are fractured explosively. Reactant input conduits communicating with upper portions of the fragmented coal zone and product withdrawal conduits communicating with lower portions thereof are provided. The uppermost layer of the fragmented zone is ig ...


2
Howe Milton A, Dexter Everett H, Thompson Eugene D: Method of film sheet dispensing and wrapping. W R Grace & Co, Toney John J, Lee William D, February 26, 1974: US3793799 (211 worldwide citation)

This invention is a method and apparatus for dispensing film sheets which are used for wrapping hamburgers, sandwiches, or other products which must be hand wrapped quickly. The film sheets are stacked and stapled at at least one corner with cooperating slits cut in the film near the staple. The she ...


3
Templin Lawrence R: Automatic antenna impedance tuner including digital control circuits. Hughes Aircraft Company, MacAllister W H, Rengel R J, February 26, 1974: US3794941 (172 worldwide citation)

An automatic antenna tuner includes digital control circuits for selecting reactive tuning elements of an antenna impedance matching network. The tuner arrangement provides for rapid transforming of multiple antenna impedances to the load resistance required for efficient transfer of power from a po ...


4
Strange Lloyd K: Combination in situ combustion displacement and steam stimulation of producing wells. Mobil Oil Corporation, Gaboriault A L, Ehrlich Henry L, February 26, 1974: US3794113 (125 worldwide citation)

This specification discloses a method of producing hydrocarbons from a hydrocarbon-bearing formation penetrated by a pattern of wells including at least one injection well and two production wells spaced relatively close one to the other. The production wells are stimulated by heating the formation ...


5
Wesley Newton K: Multiple focal contact lens. Wesley Jessen, Pennie & Edmonds, February 26, 1974: US3794414 (120 worldwide citation)

A contact lens construction suitable for use by individuals ordinarily requiring a bifocal prescription. The lens includes a light transmitting area interrupted by spaced-apart opaque portions. Continuous focal characteristics are achieved by utilizing light transmitting portions for providing visio ...


6
Nawracaj Edward P, Greit Henry: Dual oscillator, variable pulse duration electrotherapeutic device. Kirkland & Ellis, February 26, 1974: US3794022 (115 worldwide citation)

A first multi-vibrator produces square wave pulses of constant voltage for a 15 second period with a three second 'off' interval in between each pulse. The 15 second pulses are converted into ramp pulses of the same period and interval. The ramp pulses are used to control a second multivibrator whic ...


7
Osborn William, Carter Bob: Data sampling communication system. Tocom, Clegg and Cantrell, February 26, 1974: US3794922 (115 worldwide citation)

Disclosed is a system for sampling or interrogating selected ones of a plurality of remote units at which are located television receivers, to determine which of a plurality of television channels are being viewed at the interrogated remote units at the particular time of interrogation. The system i ...


8
Jacobs Harry Barry: Ventilating apparatus embodying selective volume or pressure operation and catheter means for use therewith. February 26, 1974: US3794026 (104 worldwide citation)

A ventilating and resuscitator system for emergency and non-emergency uses which provides selective pressure or volume modes of operation. The control of flow of inflating pressurized gas, under pressures between 20 and 100 psi, is subject to either manual control or automatic control wherein the au ...


9
Gertsch Ernst, Gertsch Ulrich: Ski boot. Gertsch, Kleeman Werner W, February 26, 1974: US3793749 (83 worldwide citation)

A ski boot having outer upper portions which can be pivoted about hinges with regard to the sole of the ski boot from an open position into a closed position. The outer upper portion arranged at the region of the vamp and the outer upper portion arranged at the region of the quarter are coupled to o ...


10
Frei Ephraim H, Yerushalmi Shmuel: Gastrointestinal catheter. Yeda Research and Development, February 26, 1974: US3794041 (82 worldwide citation)

A gastrointestinal catheter of elongated shape, flexible and including ferromagnetic material enabling it, when inserted into the cavity of a body part, to be attracted by a magnet external of the body in order to manipulate the body part with the catheter. In the described embodiments, the ferromag ...