Patent US2847703A successfully refreshed from Google Patents.
US2847703A
Expired / Lapsed
US
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Apparatus for producing varying denier filaments
Assignee: Akzona Inc
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Filing: 1954-08-24
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Granted: 1958-08-19
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Schrenk Hans Alwin
- 👤 Pieter Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:11
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2038722A
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US2045530A
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FR748680A
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US2276999A
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US2220403A
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US2272666A
Cited
US2296394A
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US2433325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |