Patent US2886756A successfully refreshed from Google Patents.
US2886756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plugging of single phase motors
Assignee: Individual
•
Filing: 1957-09-06
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Granted: 1959-05-12
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Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
- 👤 Edward J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:37
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2488383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |