US2631791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web tensioning and driving device
Assignee: Individual
•
Filing: 1949-07-02
•
Granted: 1953-03-17
•
Expires: 1969-07-02
Abstract
No abstract record available.
Inventors
- 👤 George H Wheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:00
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/02; B65H23/00; B65H23/04; B65H23/18; B65H23/182; B65H23/1825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304923A
Cited
DE368255C
Cited
US1652299A
Cited
US2259115A
Cited
US2251493A
Cited
US2253653A
Cited
US2496977A
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 |