US2905968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscose spinning device
Assignee: Akzona Inc
•
Filing: 1955-09-07
•
Granted: 1959-09-29
•
Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Bernard F Walker
- 👤 Raymond C Ward
- 👤 Donald J Godehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:08
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR406724A
Cited
DE469345C
Cited
US922805A
Cited
GB190819995A
Cited
DE466384C
Cited
US2027419A
Cited
US2416291A
Cited
US2510135A
Cited
US2732586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |