Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368042 | Biofeedback device for monitoring muscular movement | John L. O'Neal | 1994-11-29 |
| 5365333 | Apparatus for analyzing tracking error in magnetic tapes | Wayne M. Wirth | 1994-11-15 |
| 5342682 | Method of molding optical recording drums | Wayne M. Wirth | 1994-08-30 |
| 5340975 | Method and apparatus for reducing the effects of laser noise and for improving modulation transfer function in scanning a photoconductive surface | — | 1994-08-23 |
| 5268950 | System and method for maintaining uniform spacing of an electrode over the surface of an x-ray plate | Wayne M. Wirth | 1993-12-07 |
| 5149951 | Apparatus and method for presenting a data card for data transfer with centrifugal flyweight | — | 1992-09-22 |
| 5096627 | Method of molding optical recording drums | Wayne M. Wirth | 1992-03-17 |
| 5022018 | System for applying a perpendicular magnetic field to the illuminated side of a magneto-optic medium | — | 1991-06-04 |
| 4939715 | Tape scanning apparatus | Wayne M. Wirth | 1990-07-03 |
| 4812633 | Optical data card | John W. Ulseth, Norman L. Giorgini, Jathan D. Edwards | 1989-03-14 |
| 4586101 | Tape recorder cassette with tamper-proof counter | — | 1986-04-29 |
| 4575778 | Tape cassette containing run counter disc | — | 1986-03-11 |
| 4525696 | Driver for rotating a magnetic playback head | — | 1985-06-25 |
| 4433351 | System for reducing phase error in multitrack magnetic recording | — | 1984-02-21 |
| 4381491 | Device to slow solenoid actuation motion | — | 1983-04-26 |
| 4291956 | Graphic forming device with preview feature | — | 1981-09-29 |
| 4257075 | Tape magazine and recording and/or playback machine with improved magazine locating and loading structure | Steve Wysocki, Norman E. Nelson | 1981-03-17 |