Patent US2441680A successfully refreshed from Google Patents.
US2441680A
Expired / Lapsed
US
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Adjustable letoff for looms
Assignee: Crompton and Knowles Corp
•
Filing: 1946-02-15
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Granted: 1948-05-18
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Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 Walter H Wakefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:18
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/04; D03D49/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US689703A
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US1102528A
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US1383200A
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US1443728A
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US2398925A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |