US2651022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time measurement system
Assignee: AMERICAN CHRONOSCOPE Corp
•
Filing: 1949-06-04
•
Granted: 1953-09-01
•
Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Shelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
G; G04; G04F; G04F10/00; G04F10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2511868A
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US1677157A
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US2178641A
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US2177569A
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US2392916A
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US2422654A
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US2422655A
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US2504848A
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US2537569A
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US2513988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |