US2812779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension control device
Assignee: Clemson Agricultural College of South Carolina
•
Filing: 1953-02-11
•
Granted: 1957-11-12
•
Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:30
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/04; D03D49/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US417033A
Cited
US664380A
Cited
US1230235A
Cited
US1659236A
Cited
FR639658A
Cited
US2184059A
Cited
US2397914A
Cited
US2705024A
Cited
US2646081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |