Patents per Year
Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| D282740 | Telephone set | — | 1986-02-25 | |
| 4527755 | Hinged visor-type door for tape cassette | James J. Wulfing | 1985-07-09 | $3,858,000 |
| 4520969 | Videocassette tape spool having a wear button | James J. Wulfing | 1985-06-04 | $5,142,000 |
| 4515330 | Tape roller for a tape cassette | James J. Wulfing | 1985-05-07 | $5,629,000 |
| 4515323 | Tape spool | James J. Wulfing | 1985-05-07 | $5,629,000 |
| 4440370 | Securing stake | — | 1984-04-03 | |
| 4434338 | Coil spring switch | — | 1984-02-28 | |
| 4209682 | Low bounce momentary contact switch | — | 1980-06-24 |