US2890306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic circuit breaker
Assignee: Murray Manufacturing Corp
•
Filing: 1957-06-25
•
Granted: 1959-06-09
•
Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Albert B Rypinski
- 👤 Walter S J Smith
- 👤 Brunner Carl
- 👤 Martin J Laverty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:25
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/34; H01H71/345; H01H71/50; H01H71/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733312A
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US2300884A
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US2422320A
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US2540491A
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US2532383A
Cited
US2690528A
Cited
US2700711A
Cited
US2661451A
Cited
US2816191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |