US2626523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring contact testing apparatus
Assignee: AT&T Inc
•
Filing: 1946-12-24
•
Granted: 1953-01-27
•
Expires: 1966-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harold S Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:20
CPC Classifications
G; G01; G01N; G01N3/00; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0288; G01N2203/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US306062A
Cited
US1543560A
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DE369588C
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US1565577A
Cited
US2024571A
Cited
US2077510A
Cited
US2159969A
Cited
US2258424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |