US2900469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit-breaker control device
Assignee: Individual
•
Filing: 1954-12-27
•
Granted: 1959-08-18
•
Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Gratzmuller Jean Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:30
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1530120A
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US1830672A
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US1974306A
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US2078784A
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US2290320A
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US2247201A
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US2239554A
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US2231708A
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US2261711A
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US2308261A
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US2464237A
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US2430128A
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US2578204A
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US2765378A
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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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |