Patent US4232037A successfully refreshed from Google Patents.
Patent US2687937A successfully refreshed from Google Patents.
US2687937A
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Assignee: Individual
•
Filing: 1951-03-05
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Granted: 1954-08-31
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Expires: 1971-03-05
Abstract
No abstract record available.
Inventors
- 👤 Cooper Benjamin
- 👤 Hohmann Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:54
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2203707A
Cited
US505062A
Cited
US1749698A
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US766353A
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US826561A
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US1140426A
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US1167733A
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US1329262A
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US1550132A
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US2010966A
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US2108400A
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US2281262A
Cited
GB558969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |