US2621500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive and constant-tension take-up mechanism for knitting and other textile machines
Assignee: Whitin Machine Works Inc
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Filing: 1951-04-04
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Granted: 1952-12-16
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Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 George E Clentimack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:30
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/04; D03D49/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |