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US1827372A
Expired / Lapsed
US
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Hand control for electric motors
Assignee: Individual
•
Filing: 1928-05-31
•
Granted: 1931-10-13
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Expires: 1948-05-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Riddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/02; H02P1/04; H02P1/06; Y; Y10; Y10S; Y10S388/00; Y10S388/935; Y10S388/937
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) | 1934-10-12 | 1935-04-13 | 1935-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-12 | 1939-04-13 | 1939-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-12 | 1943-04-13 | 1943-10-13 | $7700.00 | Window Closed / Lapsed |