Patent US3375408A successfully refreshed from Google Patents.
US3375408A
Expired / Lapsed
US
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Test fixture for keyed printed circuit board
Assignee: AT&T Inc
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Filing: 1965-11-15
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Granted: 1968-03-26
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Buhrendorf
- 👤 Loosme Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:07
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; H; H05; H05K; H05K7/00; H05K7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2951185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |