Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 4476573 | Radio link remote control signaling system, and method To permit simultaneous transmission of command codes, in binary command words, with traffic or other announcements, being broadcast over an FM transmitter which has a 57 kHz subcarrier AM modulated by an announcement recognition (AR) signal, for example 1... | 10/09/1984 |
| 4476581 | FM Receiver with subcarrier decoding circuit To prevent loss of information during an announcement in a traffic or announcement recognition system in which, during radiation of an announcement, a subcarrier is modulated to a lesser degree by a radio station or region recognition frequency (RR) but t... | 10/09/1984 |
| 4450589 | FM Receiver for reception of special announcements and general programs To improve reliability of recognition of an announcement recognition (AR) signal radiated by a transmitter upon broadcasting an announcement (e.g. traffic information, news, etc.) in the form of AM modulation of a 57 kHz auxiliary subcarrier, in which the... | 05/22/1984 |
| 4449249 | Televison programming information system Up to date television programming information along with a commercial is provided for a viewer of television independent of the viewer's television set. Such is accomplished by a radio either AM or FM which broadcasts first and second subcarrier signals c... | 05/15/1984 |
| 4435843 | FM Receiver for general programs and special announcements To improve reliability of recognition of an announcement recognition (AR) signal radiated by a transmitter upon broadcasting an announcement (e.g. traffic information, news, etc.), in the form of AM modulation of a 57 kHz auxiliary subcarrier, in which th... | 03/06/1984 |
| 4379947 | System for transmitting data simultaneously with audio An FM broadcasting system is disclosed for transmitting a data signal simultaneously with an auxiliary audio program on the same subcarriers of an FM transmission channel. The main program is transmitted on the FM transmission channel carrier and the auxi... | 04/12/1983 |
| 4345334 | Reduced-cross talk telemetry system and method of manufacture thereof Method and apparatus for providing a multi-channel telemetry system in which the fundamental frequencies of the transmit-receive channels of the system are selected from a series of tentative fundamental frequencies. The successive fundamental frequencies... | 08/17/1982 |
| 4210870 | Signal transmitting system A capacitive signal dependent upon a quantity being measured is produced by capacitive sensors of a radiosonde. An oscillator in the radiosonde has an output frequency, controlled by the capacitive signal, in the order of 1 to 10 MHz. The output frequency... | 07/01/1980 |
| 4090138 | FSK Transmitter having frequency band-limitation A signal consisting of square pulses is applied to an FSK transmitter and is transformed into a control signal consisting of substantially symmetrical trapezoidal pulses. This control signal is applied on the one hand to a gyrator oscillator modulator to ... | 05/16/1978 |
| 4078245 | System for multiplexing information channels adjacent to a video spectrum A system for multiplexing either a single or multiple information channels adjacent to the video spectrum on a TV microwave or cable by frequency modulating a high frequency subcarrier at wide deviation with one or composite information signals, translati... | 03/07/1978 |
| 4048619 | Secure two channel SCA broadcasting system A secure information broadcasting system including a central broadcasting station for encoding data in binary form utilizing a keyword and transmitting on one frequency a FM-SCA signal phase shift modulated by the encoded data. The encoded data is also su... | 09/13/1977 |
| 3980954 | Bidirectional communication system for electrical power networks An arrangement of communication components to provide communications between a central control center and various customer load locations in an electrical power distribution system. Control or interrogation signals are originated at the control center and... | 09/14/1976 |
| 3939407 | Plural channel communications system A system for communicating a data channel composed of a multiplicity of telephone-type messages wherein the invention incorporates circuitry for modulating service channel data onto a carrier of the telephone channel data and for demodulating the service ... | 02/17/1976 |
