Patent US6613136B1 successfully refreshed from Google Patents.
Patent US2532325A successfully refreshed from Google Patents.
US2532325A
Expired / Lapsed
US
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Apparatus for treating yarn
Assignee: North American Rayon Corp
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Filing: 1945-08-06
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Granted: 1950-12-05
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Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert O Naumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/02; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2020057A
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US2129274A
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US2225407A
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US2167681A
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US2294870A
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US2416534A
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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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |