Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109544 | Paging receiver with automatic frequency control | James G. Mittel, Walter L. Davis, Sergio Fernandez, Lorenzo A. Ponce De Leon | 1992-04-28 |
| 4891637 | Acknowledge back pager with apparatus for controlling transmit frequency | James Michael Keba, Francis R. Steel | 1990-01-02 |
| 4882579 | Code division multiplexed acknowledge back paging system | — | 1989-11-21 |
| 4875038 | Frequency division multiplexed acknowledge back paging system | Leon Jasinski, Francis R. Steel | 1989-10-17 |
| 4847626 | Microstrip balun-antenna | Mark P. Kahler | 1989-07-11 |
| 4825193 | Acknowledge back pager with adaptive variable transmitter output power | Leon Jasinski, Francis R. Steel | 1989-04-25 |
| 4823123 | Knowledge back pager with frequency control apparatus | — | 1989-04-18 |
| 4737797 | Microstrip balun-antenna apparatus | Albert A. Kong | 1988-04-12 |
| 4725395 | Antenna and method of manufacturing an antenna | Bernard Gasparaitis, Thomas W. Long | 1988-02-16 |
| 4578628 | Portable battery powered electrical apparatus with improved battery pack protected against inadvertent short circuit of the battery terminals | — | 1986-03-25 |
| 4574290 | High gain vertically polarized antenna structure | — | 1986-03-04 |
| 4516127 | Three element low profile antenna | — | 1985-05-07 |
| 4504834 | Coaxial dipole antenna with extended effective aperture | Oscar M. Garay, Quirino Balzano | 1985-03-12 |
| 4442438 | Helical antenna structure capable of resonating at two different frequencies | Oscar M. Garay, Quirino Balzano | 1984-04-10 |
| 4313119 | Dual mode transceiver antenna | Oscar M. Garay | 1982-01-26 |