| Patent No. | Patent Title: |
| 4604741 | Voice and data interface circuit |
| 4596049 | Electrical control system |
| 4584719 | Fiber optic workstation datalink interface |
| 4584720 | Optical communication system using pulse position modulation |
| 4583217 | Method of access control in a communication system using orthogon... |
| 4581731 | Receiver for optical communication |
| 4581770 | Fail safe repeater for fiber optic bus distribution system |
| 4581750 | Transmission system for the transmission of binary data symbols |
| 4581730 | Optical instrumentation method and device |
| 4580295 | System for monitoring optical data bus transmissions |
| 4575842 | Survivable local area network |
| 4571720 | Method and apparatus for reducing the convergence time of an echo... |
| 4571735 | Method of multi-level encoding including synchronizing signals |
| 4566135 | Pressure transducer |
| 4563774 | Address coded communication system |
| 4562571 | Speech processing device for radioelectric equipment adapted for ... |
| 4561118 | Bus system with optical waveguides having collision detection |
| 4561120 | Protective relaying system |
| 4561089 | Correlation detectors for use in direct sequence spread spectrum ... |
| 4558465 | Switched bias scheme for high speed laser transmitter |
| 4554669 | Frequency jump radiocommunications system with interburst redunda... |
| 4549313 | Supervisory device for an optoelectronic switching network |
| 4547889 | Auto-orthogonalizing system of equalization adapted to a range of... |
| 4546466 | Optical encoder using time domain and wavelength multiplexing |
| 4546471 | Multiplexing device for grouping two frequency bands |
| 4545074 | Fiber optic loop system with bypass mode |
| 4543662 | Optical beam switching device and telephone exchange comprising a... |
| 4542536 | Device and method for reducing level dynamics in an optical trans... |
| 4539674 | Method of providing adaptive echo cancellation in transmission of... |
| 4539675 | Echo canceller |
| 4538283 | Adaptive equalizer suitable for use with fiber optics |
| 4533948 | CATV Communication system |
| 4525874 | Device for transmitting measured values to a remote location |
| 4525873 | Device for transmitting measured values to a remote location |
| 4523307 | Power line carrier multi telephone extension system for full dupl... |
| 4520474 | Duplex communication transceiver with modulation cancellation |
| 4520475 | Duplex communication transceiver with modulation cancellation |
| 4519074 | Transceiver having collision detection capability for conten... |
| 4519073 | Bit compression multiplexer |
| 4517681 | Digital timing unit |
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