Patent US3422176A successfully refreshed from Google Patents.
US3422176A
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US
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Process for spinning filaments of nonuniform cross section
Assignee: Celanese Corp
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Filing: 1965-10-14
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Granted: 1969-01-14
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 Saunders E Jamison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:10
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20; A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; A24D3/10; A24D3/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |