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US2920439A
Expired / Lapsed
US
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Electrically driven clock, particularly for batteries
Assignee: Individual
•
Filing: 1956-05-28
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Granted: 1960-01-12
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Rich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:24
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; G04C3/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US343976A
Cited
US1914231A
Cited
GB190307701A
Cited
US1167762A
Cited
FR611450A
Cited
US1907919A
Cited
US2150516A
Cited
US2768495A
Cited
CH290656A
Cited
FR1092411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |