LandOfFree - US Patents

Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion

Quad-ridge waveguide mixer

Communications: radio wave antennas – Antennas – Wave guide type

Quad-ridged feed horn with two coplanar probes

Electrophotography – Document handling – Copy

Quad-roll decurler

Receptacles – Closures – Removable closure retained by adhesive or fusion means

Quad-seal snap lock

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

Quad-state control signal input circuit

Electrical computers and digital processing systems: support – Computer power control – Power conservation

Quad-state power-saving virtual storage controller

Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure

Quad-tree embedded image compression and decompression...

Television – Basic receiver with additional function – Multimode

Quad-video sensor and method

Exercise devices – For foot or ankle

Quad/hamstring exercise apparatus

Optical: systems and elements – Lens – With graded refractive index

Quadaxial gradient index lens

Communications: radio wave antennas – Antennas – Microstrip

Quadband antenna for portable devices

Communications: directive radio wave systems and devices (e.g. – Radar ew

Quadbit kernel function algorithm and receiver

Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids

Quadcane with adjustable stance

Amplifiers – Hum or noise or distortion bucking introduced into signal...

Quadcomp amplifier

Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening

Quadcorner tray wrapper designs

Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening

Quadcorner tray wrapper designs

Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening

Quadcorner tray wrapper designs

QUADFET-A novel field effect transistor

Material or article handling – Vertically swinging load support – Shovel or fork type

Quadflex bucket apparatus