Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 4430530 | Telephony system with automatic test call generator for remote port groups A telephony network with a digital central office and one or more remotely located digital satellite units. Each digital satellite unit connects to a number of remote subscriber lines and monitors these lines to establish communications through interconne... | 02/07/1984 |
| 4363936 | Telephone network including common equipment with message information and control information circuits for connecting to stations having multifunction telephones A private telephone network that includes multifunction telephones. Multifunction telephones are connected to common equipment by a voice signal path and a data signal path. Supervisory information passes over the data signal path in the form of polled me... | 12/14/1982 |
| 4334126 | Control circuit for concurrently monitoring and controlling functions and frequency modulating status information in a digital data network A remote unit contains function circuits to be controlled in response to control data from a central location and function circuits to generate information for transfer to the central location. The control data is transferred between the remote unit and t... | 06/08/1982 |
| 4322581 | Multifunction telephone with message information and control information circuits for connecting stations and common equipment in a telephone network A private telephone network that includes multifunction telephones. Multifunction telephones are connected to common equipment by a voice signal path and a data signal path. Supervisory information passes over the data signal path in the form of polled me... | 03/30/1982 |
