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You searched :Patents issued on Oct 13, 1987.

Check out Design Patents for Oct 13, 1987

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USRE32521

Light demodulator and method of communication employing the same - Oct 13, 1987

USRE32520

Magnetic probe - Oct 13, 1987

USRE32519

Sulfur-containing isoquinoline derivatives, process for the preparation thereof and pharmaceutical compositions containing them - Oct 13, 1987

USRE32518

Camptothecin derivatives - Oct 13, 1987

USRE32517

Method and apparatus for cleaning heated surfaces - Oct 13, 1987

US4700402

Input method for graphic pattern data - Oct 13, 1987

US4700401

Method and apparatus for character recognition employing a dead-band correlator - Oct 13, 1987

US4700400

Feature extraction technique for use in a pattern recognition system - Oct 13, 1987

US4700399

Color image processing apparatus - Oct 13, 1987

US4700398

Method of and apparatus for detecting heights of points on surface of object - Oct 13, 1987

US4700397

Surveillance microphone holder - Oct 13, 1987

US4700396

Sound-wave receiving appliance - Oct 13, 1987

US4700395

Recreational cooler and speaker system - Oct 13, 1987

US4700394

Method of recognizing speech pauses - Oct 13, 1987

US4700393

Speech synthesizer with variable speed of speech - Oct 13, 1987

US4700392

Speech signal detector having adaptive threshold values - Oct 13, 1987

US4700391

Method and apparatus for pitch controlled voice signal processing - Oct 13, 1987

US4700390

Signal synthesizer - Oct 13, 1987

US4700389

Stereo sound field enlarging circuit - Oct 13, 1987

US4700388

Apparatus for scrambling a television signal - Oct 13, 1987

US4700387

Broadcast system for scrambled programming signals - Oct 13, 1987

US4700386

Technique for promoting CATV pay-per-view events and acknowledging subscriber orders - Oct 13, 1987

US4700385

Remote telephone control apparatus - Oct 13, 1987

US4700384

Indoor telephone line demarcation box having several compartments - Oct 13, 1987

US4700383

Lock-releasing mechanism for telephone set with muting function - Oct 13, 1987

US4700382

Voice-switched telephone circuit with center idle state - Oct 13, 1987

US4700381

Circuit arrangement for centrally-controlled telecommunications exchange systems, comprising central control units and an alternate circuit arrangement - Oct 13, 1987

US4700380

Solid state remote actuable switch - Oct 13, 1987

US4700379

Aircraft communications apparatus - Oct 13, 1987

US4700378

Data base accessing system - Oct 13, 1987

US4700377

Selectively actuable electronic apparatus - Oct 13, 1987

US4700376

Automatic telephone answering apparatus with remote control signal muting - Oct 13, 1987

US4700375

Battery charging, reset, and data transfer system - Oct 13, 1987

US4700374

Mobile telephone location system - Oct 13, 1987

US4700373

Platforms for X-ray examination of knee joints - Oct 13, 1987

US4700372

X-ray generating apparatus - Oct 13, 1987

US4700371

Long life x-ray source target - Oct 13, 1987

US4700370

High speed, low power, multi-bit, single edge-triggered, wraparound, binary counter - Oct 13, 1987

US4700369

Athletic activities counter - Oct 13, 1987

US4700368

Method and apparatus for sensing sheets - Oct 13, 1987

US4700367

Pulse width control circuit - Oct 13, 1987

US4700366

Method for the reception and detection of digital signals - Oct 13, 1987

US4700365

Digital threshold detector with hysteresis - Oct 13, 1987

US4700364

FSK with continuous phase and continuous slope at bit transitions - Oct 13, 1987

US4700363

Data communication method and apparatus - Oct 13, 1987

US4700362

A-D encoder and D-A decoder system - Oct 13, 1987

US4700361

Spectral emphasis and de-emphasis - Oct 13, 1987

US4700360

Extrema coding digitizing signal processing method and apparatus - Oct 13, 1987

US4700359

Circuit arrangement for sampling a ternary signal - Oct 13, 1987

US4700358

Synchronous/asynchronous modem - Oct 13, 1987

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