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US2492451A
Expired / Lapsed
US
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Spinneret for the production of viscose filaments
Assignee: Akzo Nobel UK PLC
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Filing: 1945-01-03
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Granted: 1949-12-27
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Expires: 1965-01-03
Abstract
No abstract record available.
Inventors
- 👤 Dan B Wicker
- 👤 Elvin L Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:49
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02; D01D4/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB273647A
Cited
US1826718A
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US1959930A
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US1901658A
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US2100581A
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US2284154A
Cited
US2273638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |