Patent US2761935A successfully refreshed from Google Patents.
US2761935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Individual
•
Filing: 1952-07-30
•
Granted: 1956-09-04
•
Expires: 1972-07-30
Abstract
No abstract record available.
Inventors
- 👤 David C Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:03
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/7015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1747445A
Cited
FR710224A
Cited
US1944403A
Cited
FR813543A
Cited
US2253197A
Cited
GB575854A
Cited
US2486127A
Cited
US2469459A
Cited
US2632828A
Cited
US2629798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |