Patent US2569815A successfully refreshed from Google Patents.
US2569815A
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US
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Synchronous motor controlled secondary clock
Assignee: International Business Machines Corp
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Filing: 1948-01-30
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Granted: 1951-10-02
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Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 Clinton E Larrabee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:29
CPC Classifications
G; G04; G04C; G04C11/00; G04C11/02; G04C11/023
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) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |