Patent US2533307A successfully refreshed from Google Patents.
US2533307A
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US
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Constant torque winding means for slitting machines
Assignee: EIDP Inc
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Filing: 1948-07-16
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Granted: 1950-12-12
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Expires: 1968-07-16
Abstract
No abstract record available.
Inventors
- 👤 Amos Stephen Earl
- 👤 Jr Douglas Creelman Jeffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
B; B65; B65H; B65H18/00; B65H18/08; B65H18/10; B65H18/106; F; F16; F16D; F16D7/00; F16D7/02; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/413; B65H2301/4136; B65H2301/41368; B65H2301/414; B65H2301/4148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |