Patent US2741437A successfully refreshed from Google Patents.
US2741437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant tension take-up and let-off mechanism
Assignee: Belden Manufacturing Co
•
Filing: 1953-02-10
•
Granted: 1956-04-10
•
Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Howard H Haworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:58
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2317290A
Cited
US2237112A
Cited
US2242435A
Cited
US2603428A
Cited
US2658751A
Cited
US2635825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |