US2852808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacture or treatment of artificial filamentary materials
Assignee: Acordis UK Ltd
•
Filing: 1954-09-22
•
Granted: 1958-09-23
•
Expires: 1974-09-22
Abstract
No abstract record available.
Inventors
- 👤 Sowter Percy Frederick Combe
- 👤 Hill Frank Brentnall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:19
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01D10/00; D01D10/04; D01D10/0436; Y; Y10; Y10T; Y10T24/00; Y10T24/18; Y10T24/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2239159A
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US2453839A
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US2536093A
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US2552598A
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US2642333A
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US2700794A
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US2677949A
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US2694915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |