Steel; Francis R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Steel; Francis R..The latest application filed is for "acknowledge back paging system having the capability of matching variable length data messages to pager addresses".
- Steel; Francis R. - Parkland FL
- Steel; Francis R. - Pompano Beach FL
| Patent | Date |
|---|---|
| Acknowledge back paging system having the capability of matching variable length data messages to pager addresses Grant 5,142,279 - Jasinski , et al. August 25, 1 | 1992-08-25 |
| Acknowledge back pager with apparatus for controlling transmit frequency Grant 4,891,637 - Siwiak , et al. January 2, 1 | 1990-01-02 |
| Frequency division multiplexed acknowledge back paging system Grant 4,875,038 - Siwiak , et al. October 17, 1 | 1989-10-17 |
| Acknowledge back pager with adaptive variable transmitter output power Grant 4,825,193 - Siwiak , et al. April 25, 1 | 1989-04-25 |
| Spectrally efficient digital modulation method and apparatus Grant 4,737,969 - Steel , et al. April 12, 1 | 1988-04-12 |
| Crystal controlled overtone oscillator having a rejection circuit for preventing oscillation at undesired overtones Grant 3,875,533 - Irwin , et al. April 1, 1 | 1975-04-01 |
| Crystal Oscillator Having Spurious Oscillation Suppression Circuit Grant 3,845,410 - Steel October 29, 1 | 1974-10-29 |
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