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Patent US2450489A successfully refreshed from Google Patents.
US2450489A
Expired / Lapsed
US
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Letoff for looms
Assignee: Crompton and Knowles Corp
•
Filing: 1946-07-26
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Granted: 1948-10-05
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Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
- 👤 Victor F Sepavich
- 👤 Clarence R Kronoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:03
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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US1749131A
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US1817203A
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US1703884A
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US2143200A
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US2227355A
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US2169326A
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US2340889A
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US2430639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-05 | 1952-04-05 | 1952-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-05 | 1956-04-05 | 1956-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-05 | 1960-04-05 | 1960-10-05 | $7700.00 | Window Closed / Lapsed |