Patent US2888540A successfully refreshed from Google Patents.
US2888540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Individual
•
Filing: 1954-03-17
•
Granted: 1959-05-26
•
Expires: 1974-03-17
Abstract
No abstract record available.
Inventors
- 👤 Gratzmuller Jean Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:05
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1302736A
Cited
US1559205A
Cited
US1910714A
Cited
US2191501A
Cited
US2153633A
Cited
US2261989A
Cited
US2668891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |