US2754680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test fixture for welded relay contacts
Assignee: AT&T Inc
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Filing: 1954-01-20
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Granted: 1956-07-17
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Expires: 1974-01-20
Abstract
No abstract record available.
Inventors
- 👤 Donald C Koehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:35
CPC Classifications
G; G01; G01N; G01N3/00; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0296; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |