US2637795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temporary load switch
Assignee: AB Chance Co
•
Filing: 1951-07-07
•
Granted: 1953-05-05
•
Expires: 1971-07-07
Abstract
No abstract record available.
Inventors
- 👤 Hubbard David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:46
CPC Classifications
H; H01; H01R; H01R11/00; H01R11/11; H01R11/12; H01R11/14; H01R11/15
Claims Analysis
Total Claims: 0
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US982869A
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US1288820A
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US1694223A
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US1899915A
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US2025321A
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US2200496A
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US2159884A
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US2277222A
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US2278322A
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US2555689A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |