Patent US2631790A successfully refreshed from Google Patents.
US2631790A
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US
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Web tensioning and driving mechanism
Assignee: Individual
•
Filing: 1948-10-01
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Granted: 1953-03-17
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Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 George H Wheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
B; B65; B65H; B65H16/00; B65H16/10; B65H16/103; B65H23/00; B65H23/04; B65H23/18; B65H23/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1664640A
Cited
US1879591A
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US2048764A
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US2278182A
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US2232252A
Cited
US2267852A
Cited
US2469706A
Cited
US2437128A
Cited
US2474620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |