US2492425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning artificial filaments
Assignee: Akzo Nobel UK PLC
•
Filing: 1945-08-25
•
Granted: 1949-12-27
•
Expires: 1965-08-25
Abstract
No abstract record available.
Inventors
- 👤 James W Hall
- 👤 Alfred W Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:31
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; D01D5/253; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 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 |