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Browse by Date |
| Patent Number |
Title Of Patent |
Date Issued |
| 4271525 |
Adaptive diversity receiver for digital communications |
Jun. 2, 1981 |
| 4271524 |
Spread spectrum FH-MFSK receiver |
Jun. 2, 1981 |
| 4271523 |
Contention interference detection in data communication receiver |
Jun. 2, 1981 |
| 4271522 |
Method of and apparatus for determining errors read from a magnetic recording medium |
Jun. 2, 1981 |
| 4271521 |
Address parity check system |
Jun. 2, 1981 |
| 4271520 |
Synchronizing technique for an error correcting digital transmission system |
Jun. 2, 1981 |
| 4271519 |
Address mark generation and decoding method |
Jun. 2, 1981 |
| 4271518 |
Data transmission/reception installation with parallel/serial and serial/parallel character conv... |
Jun. 2, 1981 |
| 4271517 |
Circuit arrangement for the formation of check bits for binary data |
Jun. 2, 1981 |
| 4271516 |
Automatic testing of electrical circuitry |
Jun. 2, 1981 |
| 4271515 |
Universal analog and digital tester |
Jun. 2, 1981 |
| 4271514 |
Loopback test for data transmission paths |
Jun. 2, 1981 |
| 4271513 |
Method and apparatus for carrying out loopback test |
Jun. 2, 1981 |
| 4271512 |
Information collection and storage system with memory test circuit |
Jun. 2, 1981 |
| 4271511 |
Communications network |
Jun. 2, 1981 |
| 4271510 |
Shift-register transmitter for use in a high speed, low noise digital data communication system |
Jun. 2, 1981 |
| 4271509 |
Supervisory signaling for digital channel banks |
Jun. 2, 1981 |
| 4271508 |
Method for transmitting data |
Jun. 2, 1981 |
| 4271507 |
Communication broadcast channel interface |
Jun. 2, 1981 |
| 4271506 |
High speed data switching node |
Jun. 2, 1981 |
| 4271505 |
Process communication link |
Jun. 2, 1981 |
| 4271504 |
Frequency modulators for use in microwave links |
Jun. 2, 1981 |
| 4271503 |
Automatic control device for a receiver using a pilot |
Jun. 2, 1981 |
| 4271502 |
Digital voice conferencer |
Jun. 2, 1981 |
| 4271501 |
Splitter/combiner network |
Jun. 2, 1981 |
| 4271500 |
Device for converting a non-uniformly sampled signal with short-time spectrum to a uniformly sam... |
Jun. 2, 1981 |
| 4271499 |
Method and apparatus for digitally implementing a linked compressor-expander telecommunications ... |
Jun. 2, 1981 |
| 4271498 |
Watch |
Jun. 2, 1981 |
| 4271497 |
Quadri-balanced digital time displays |
Jun. 2, 1981 |
| 4271496 |
Electronic watch |
Jun. 2, 1981 |
| 4271495 |
Electronic clock with a chime system |
Jun. 2, 1981 |
| 4271494 |
Correcting device for calendar in an analog type electronic watch |
Jun. 2, 1981 |
| 4271493 |
Electronic timepiece |
Jun. 2, 1981 |
| 4271492 |
Sound actuated clock-mirror |
Jun. 2, 1981 |
| 4271491 |
Intruder alarm system |
Jun. 2, 1981 |
| 4271490 |
Ultrasonic detection system |
Jun. 2, 1981 |
| 4271489 |
Optical disc player system |
Jun. 2, 1981 |
| 4271488 |
High-speed acquisition system employing an analog memory matrix |
Jun. 2, 1981 |
| 4271487 |
Static volatile/non-volatile ram cell |
Jun. 2, 1981 |
| 4271486 |
Waveform storage system |
Jun. 2, 1981 |
| 4271485 |
Bubble domain storage using improved transfer switch |
Jun. 2, 1981 |
| 4271484 |
Condition code accumulator apparatus for a data processing system |
Jun. 2, 1981 |
| 4271483 |
Delay circuits |
Jun. 2, 1981 |
| 4271482 |
Data processing system which protects the secrecy of confidential data |
Jun. 2, 1981 |
| 4271481 |
Micro computerized electronic postage meter system |
Jun. 2, 1981 |
| 4271480 |
Apparatus enabling the transfer of data blocks of variable lengths between two memory interfaces... |
Jun. 2, 1981 |
| 4271479 |
Display terminal with modularly attachable features |
Jun. 2, 1981 |
| 4271478 |
Method and apparatus for measuring the transmission characteristics in electrical communication ... |
Jun. 2, 1981 |
| 4271477 |
Determining the dimensions of workpieces |
Jun. 2, 1981 |
| 4271476 |
Method and apparatus for rotating the scan format of digital images |
Jun. 2, 1981 |
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