Zelina; William B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zelina; William B..The latest application filed is for "line operated fluorescent lamp inverter ballast".
- Zelina; William B. - Erie PA
- Zelina; William B. - Edinboro PA
| Patent | Date |
|---|---|
| Line operated fluorescent lamp inverter ballast Grant 4,459,516 - Zelina , et al. July 10, 1 | 1984-07-10 |
| Three phase sequence insensitive full range SCR firing circuit Grant 3,883,791 - Zelina , et al. May 13, 1 | 1975-05-13 |
| Battery Charging System For Emergency Battery Systems Grant 3,784,892 - Zelina January 8, 1 | 1974-01-08 |
| Inverter Circuit And Switching Means Grant 3,753,076 - Zelina August 14, 1 | 1973-08-14 |
| Battery-charging System With Voltage Reference Means With Two Reference Levels Grant 3,585,482 - Zelina June 15, 1 | 1971-06-15 |
| Voltage Regulator Arrangement For Generators Having Auxiliary Excitation Means Grant 3,585,490 - Zelina June 15, 1 | 1971-06-15 |
| Heat Sink For Electrical Devices Grant 3,566,958 - Zelina March 2, 1 | 1971-03-02 |
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