Lum; Francis
Patent Applications and Registrations
Patent applications and USPTO patent grants for Lum; Francis.The latest application filed is for "method and apparatus for pre-recording tracking information on magnetic media".
- Lum; Francis - Ann Arbor MI
| Patent | Date |
|---|---|
| Method and apparatus for pre-recording tracking information on magnetic media Grant 4,586,094 - Chambors , et al. April 29, 1 | 1986-04-29 |
| Data record with pre-recorded transducer positioning signals, and system for utilizing same Grant 4,472,750 - Klumpp , et al. September 18, 1 | 1984-09-18 |
| Method for controlling a disc head Grant 4,462,053 - Lum , et al. July 24, 1 | 1984-07-24 |
| Integrated disc and tape recorder drive unit Grant D270,348 - Irwin , et al. August 30, 1 | 1983-08-30 |
| Combined disc and tape drive Grant D270,055 - Irwin , et al. August 9, 1 | 1983-08-09 |
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