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Patent US2640228A successfully refreshed from Google Patents.
US2640228A
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Mechanism for drafting rayon tow
Assignee: Saco Lowell Shops
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Filing: 1947-05-06
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Granted: 1953-06-02
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Expires: 1967-05-06
Abstract
No abstract record available.
Inventors
- 👤 Virgil A Burnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:32
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/06; D01G1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB254567A
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US1883384A
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US2074556A
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US2139016A
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US2067062A
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US2158118A
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US2221023A
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US2322711A
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US2315936A
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US2419320A
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US2430611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |