Patent US2823339A successfully refreshed from Google Patents.
US2823339A
Expired / Lapsed
US
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Circuit breaker panel board
Assignee: ZINSCO ELECTRICAL PRODUCTS
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Filing: 1954-08-23
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Granted: 1958-02-11
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Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ross E Locher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:27
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H02B1/056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007174A
Cited
US2183872A
Cited
GB538122A
Cited
US2428322A
Cited
US2647255A
Cited
US2737613A
Cited
US2766405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |