Wilhelm Ruf KG
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wilhelm Ruf KG.The latest application filed is for "trimmer resistor".
- Wilhelm Ruf KG - Munich DE
- Wilhelm Ruf KG - Hohenkirchen DT
| Patent | Date |
|---|---|
| Trimmer resistor Grant 5,781,099 - Joschika , et al. July 14, 1 | 1998-07-14 |
| Potentiometer having vibration damping means Grant 4,894,638 - Flierl , et al. January 16, 1 | 1990-01-16 |
| Electronic remote control means, especially for centrally controlled locking systems in motor vehicles Grant 4,847,614 - Keller July 11, 1 | 1989-07-11 |
| Printed board for electrical circuits Grant 4,440,823 - Hoffmann April 3, 1 | 1984-04-03 |
| Keyboard switch assembly with printed circuit board Grant 4,287,394 - Hargita , et al. September 1, 1 | 1981-09-01 |
| Trimming potentiometer in T or Pi network connection with parallel resistance paths Grant 3,938,070 - Koerner , et al. February 10, 1 | 1976-02-10 |
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