Patent US 4808979A
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| Patent number | US 4808979A (click link for details and documents via Google Patents) |
|---|---|
| Title | Cursor for use in 3-D imaging systems |
| Inventors | Richard J. DeHoff, Peter W. Hildebrandt |
| Company | Tektronix Inc |
| Filing date | 1987-04-02 |
| Grant date | 1989-02-28 |