Patent US3887970A successfully refreshed from Google Patents.
US2647697A
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US
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Tandem chuck wind-up
Assignee: EIDP Inc
•
Filing: 1948-02-17
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Granted: 1953-08-04
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Expires: 1968-02-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Scott Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:02
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/10; B65H54/20; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US427696A
Cited
GB190013824A
Cited
GB191206347A
Cited
US1595818A
Cited
US1655155A
Cited
US2129411A
Cited
US2211954A
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 |