US2989606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1958-06-19
•
Granted: 1961-06-20
•
Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Walker
- 👤 Yorgin Nick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/46; H01H71/48; H01H73/00; H01H73/48; H01H73/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899519A
Cited
US1488134A
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US1798922A
Cited
US1966444A
Cited
US2328458A
Cited
US2419125A
Cited
US2357151A
Cited
US2541679A
Cited
US2677025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |