Patent US2451576A successfully refreshed from Google Patents.
US2451576A
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Electrical control system
Assignee: Motors Liquidation Co
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Filing: 1941-02-28
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Granted: 1948-10-19
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Expires: 1961-02-28
Abstract
No abstract record available.
Inventors
- 👤 George C Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:23
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1543710A
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US1680398A
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US2023117A
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US2095383A
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US2137073A
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US2260840A
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US2218778A
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US2224983A
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US2302924A
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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) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |