Patent US2572989A successfully refreshed from Google Patents.
US2572989A
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US
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Electric clock drive
Assignee: Motors Liquidation Co
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Filing: 1948-10-27
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Granted: 1951-10-30
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Expires: 1968-10-27
Abstract
No abstract record available.
Inventors
- 👤 Peter R Contant
- 👤 Raymond H Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:32
CPC Classifications
G; G04; G04C; G04C13/00; G04C13/08; G04C13/10; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/21; Y10T74/2133
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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |