Patent US 4447674A
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| Patent number | US 4447674A (click link for details and documents via Google Patents) |
|---|---|
| Title | Electronic hold release circuit |
| Inventors | Gary Grantland, Hugh S. Montgomery, Eduard F. B. Boeckmann, Larry A. Woodworth |
| Company | Gte Automatic Electric Inc. |
| Filing date | 1982-11-26 |
| Grant date | 1984-05-08 |