US3390240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker with piston gas flow and selective synchronous operation
Assignee: Westinghouse Electric Corp
•
Filing: 1965-02-26
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Granted: 1968-06-25
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Circle
- 👤 Thomas O Prunty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:41
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/88; H01H33/90; H01H33/904; H01H33/02; H01H33/04; H01H33/14; H01H33/44; Y; Y10; Y10S; Y10S84/00; Y10S84/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |