US2457620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of indicating acceleration
Assignee: Individual
•
Filing: 1942-06-26
•
Granted: 1948-12-28
•
Expires: 1962-06-26
Abstract
No abstract record available.
Inventors
- 👤 Charles R Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319036A
Cited
US1096942A
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US2254095A
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US2103507A
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US2193910A
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US2246259A
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US2208648A
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US2344679A
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US2314302A
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US2358901A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |