US2813240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor regulating apparatus
Assignee: Individual
•
Filing: 1954-05-04
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Granted: 1957-11-12
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Arnot Alfred Erwin Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:58
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18; H02P1/20; H01; H01C; H01C10/00; H01C10/50; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; H01H1/28; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H21/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |