LandOfFree - US Patents

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix antenna

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix antenna

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix antenna and feed network

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix antenna systems and methods for broadband oper

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix antenna tuning using pin diodes

Communications: radio wave antennas – Antennas – Spiral or helical type

Quadrifilar helix feed network

Communications: radio wave antennas – Antennas – Slot type

Quadrifilar tapered slot antenna

Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type

Quadrifold housing assembly for electronics

Industrial electric heating furnaces – Plural diverse heating means

Quadrilateral assembly for coherent jet lancing and post...

Inductor devices – Inductive regulators with no relatively moving parts – With magnetic shunt to increase leakage reactance

Quadrilateral electromagnetic coil assembly

Exercise devices – Involving user translation or physical simulation thereof – Having separate foot engaging members reciprocating on...

Quadrilateral exercise apparatus

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Quadrilateral lens

Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension

Quadrilateral mesh generation method and apparatus

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With large area flexible electrodes in press contact with...

Quadrilateral multichip computer systems and printed circuit boa

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Resiliently biased hinge

Quadrilateral over center hinge

Card – picture – or sign exhibiting – Display card – Folded

Quadrilateral pop-up product

Illumination – Light modifier – Reflector

Quadrilateral symmetrical light source

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

Quadrilayer optical draw medium

Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...

Quadriphase differential demodulator