Patent US2647701A successfully refreshed from Google Patents.
US2647701A
Expired / Lapsed
US
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Expansible core chuck
Assignee: Individual
•
Filing: 1949-02-02
•
Granted: 1953-08-04
•
Expires: 1969-02-02
Abstract
No abstract record available.
Inventors
- 👤 William H Cannard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:04
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/245; B65H75/2455; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1597568A
Cited
GB191123294A
Cited
US1518026A
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GB269699A
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US1810403A
Cited
FR759707A
Cited
US2027749A
Cited
US2066659A
Cited
US2058224A
Cited
US2025865A
Cited
US2365980A
Cited
US2481000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |