Patent US2416533A successfully refreshed from Google Patents.
US2416533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of synthetic yarn
Assignee: North American Rayon Corp
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Filing: 1942-07-14
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Granted: 1947-02-25
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Expires: 1962-07-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert O Naumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
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)
US2284489A
Cited
US1780346A
Cited
US1949604A
Cited
AT136367B
Cited
US2002994A
Cited
US2020057A
Cited
US2144629A
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US2254251A
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US2260251A
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US2272182A
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US2267985A
Cited
US2249712A
Cited
US2319812A
Cited
US2251226A
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US2229092A
Cited
US2286213A
Cited
US2294902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |