LandOfFree - US Patents

Railway switches and signals – Block-signal systems – Automatic

Quad state receiver

Amplifiers – With semiconductor amplifying device – Including differential amplifier

Quad switched gain circuit

Transportation – Aircraft – spacecraft – or fuselage – Vertical takeoff type

Quad tiltrotor

Transportation – Aircraft – spacecraft – or fuselage

Quad tiltrotor

Electronic digital logic circuitry – Three or more active levels

Quad to binary converter with directly connected and coupled...

Woodworking – Splitting machine – Wedge

Quad wedge tip up log splitter

Tools – Wrench – screwdriver – or driver therefor – Rigid jaws

Quad wrench

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Semiconductor – transistor or integrated circuit

Quad-24JW surface mount package

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Semiconductor – transistor or integrated circuit

Quad-28JW surface mount package

Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin

Quad-band coupling element antenna structure

Travel goods and personal belongings – Umbrella or parasol – walking support – Cane or walking support

Quad-cane

Special receptacle or package – Portable segregating carrier for plural cylindrical... – Pendent from handle

Quad-cell and six-cell carrier carton with 2-ply seal end...

Facsimile and static presentation processing – Static presentation processing – Attribute control

Quad-edge video signal detector

Inductor devices – Coils of special configuration – Toroidal

Quad-gapped toroidal inductor

Measuring and testing – Fluid pressure gauge – Diaphragm

Quad-gate demodulator circuit for capacitive transducers

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

Quad-hook for a steering wheel lock

Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head

Quad-layer GMR sandwich

Aeronautics and astronautics – Kites

Quad-line kite

Supports – Brackets – Adjustable

Quad-motion device