US2939929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit breaker
Assignee: General Electric Co
•
Filing: 1957-08-22
•
Granted: 1960-06-07
•
Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles F Hobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:51
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40; H01H71/74; H01H71/7463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1110152A
Cited
GB252697A
Cited
US1692486A
Cited
US1722741A
Cited
FR839467A
Cited
US2340957A
Cited
US2379323A
Cited
US2676242A
Cited
US2631272A
Cited
FR1017161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |