Patent DE33843C successfully refreshed from Google Patents.
Patent US2638282A successfully refreshed from Google Patents.
US2638282A
Expired / Lapsed
US
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Short core shaft
Assignee: John W Bolton and Sons Inc
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Filing: 1948-09-03
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Granted: 1953-05-12
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Expires: 1968-09-03
Abstract
No abstract record available.
Inventors
- 👤 Bruno E Prevost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:25
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/245; D; D06; D06C; D06C15/00; D06C15/08; F; F16; F16D; F16D3/00; F16D3/50; F16D3/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US163217A
Cited
GB269699A
Cited
DE489583C
Cited
US1878264A
Cited
US1945621A
Cited
US2066659A
Cited
US2365980A
Cited
US2563994A
Cited
US2564746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |