Patent US2883840A successfully refreshed from Google Patents.
US2883840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silent gear coupling for electric motor
Assignee: —
•
Filing: —
•
Granted: 1959-04-28
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Expires: 1976-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:40
CPC Classifications
G; G04; G04C; G04C15/00; Y; Y10; Y10S; Y10S464/00; Y10S464/902; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE623303C
Cited
US1756689A
Cited
US1864108A
Cited
US1939226A
Cited
US2003116A
Cited
US2682779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |