Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651064 | System for preventing piracy of recorded media | — | 1997-07-22 |
| 4982911 | Belt drive for power transfer to cartridge | — | 1991-01-08 |
| 4983496 | Method for writing position-indicating markers on magnetic tape | Arthur D. Bates | 1991-01-08 |
| 4848698 | Method for writing and means for reading position-indicating markers on tape | Arthur D. Bates | 1989-07-18 |
| 4756490 | Weldable base plate for tape cartridges | — | 1988-07-12 |
| 4697759 | Reel for aligning tape path | James J. Henderson | 1987-10-06 |
| 4624405 | Construction method for placing upright pins in a base plate | — | 1986-11-25 |
| 4502648 | ANSI-Compatible tape cartridge with oversize tape width | — | 1985-03-05 |
| 4396465 | Method for making seamless metallic ribbon belts for tape cartridges | — | 1983-08-02 |
| 4342809 | High-friction, low-elasticity drive belt for tape cartridges | — | 1982-08-03 |
| 4335857 | Web aligning system | R. Fred Pfost, William E. Seaman | 1982-06-22 |
| 4331993 | Web cleaning apparatus | R. Fred Pfost | 1982-05-25 |
| 4199794 | Dual tape transport system with tensioning means | Robert F. Pfost, William E. Seaman | 1980-04-22 |