Patent US2762879A successfully refreshed from Google Patents.
US2762879A
Expired / Lapsed
US
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Draw-out switch gear
Assignee: Federal Electric Products Co
•
Filing: 1953-01-02
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Granted: 1956-09-11
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Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ervin E Wills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:52
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/46; H02; H02B; H02B11/00; H02B11/12; H02B11/127; H02B11/133
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |