US2717288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatically controlled operating device for electric circuit breakers
Assignee: General Electric Co
•
Filing: 1952-01-04
•
Granted: 1955-09-06
•
Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
- 👤 Milton L Heintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:36
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/60; H01H3/605; H01H3/22; H01H3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US793698A
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US1264414A
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US1241533A
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GB112546A
Cited
US1480170A
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US1616540A
Cited
US1768949A
Cited
US2125465A
Cited
US2354889A
Cited
US2451962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |