Patent US2179561A successfully refreshed from Google Patents.
US2157640A
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US
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Universal motor speed governor
Assignee: Motors Liquidation Co
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Filing: 1938-06-23
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Granted: 1939-05-09
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Expires: 1958-06-23
Abstract
No abstract record available.
Inventors
- 👤 Stanley H Swarthout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/18; H02P25/182; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/924; Y10S388/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |