Patent US2636136A successfully refreshed from Google Patents.
US2636136A
Expired / Lapsed
US
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Electric motor
Assignee: Wolf Electric Tools Ltd
•
Filing: 1950-05-24
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Granted: 1953-04-21
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Expires: 1970-05-24
Abstract
No abstract record available.
Inventors
- 👤 Gubbins Charles Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:40
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/14; H02K7/145; B; B25; B25F; B25F5/00; B25F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315796A
Cited
US1468307A
Cited
US1643191A
Cited
US2082264A
Cited
GB475974A
Cited
US2436540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |