Patent US2578446A successfully refreshed from Google Patents.
US2578446A
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US
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Geared electric motor
Assignee: CENTURY ELECTRIC CO
•
Filing: 1946-10-02
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Granted: 1951-12-11
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Expires: 1966-10-02
Abstract
No abstract record available.
Inventors
- 👤 O'daniel Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:22
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/116; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679; Y10T74/19684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1127312A
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US1821216A
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US1923777A
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US1860703A
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US1971968A
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GB436751A
Cited
US2170548A
Cited
US2261104A
Cited
US2397910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |