US2424490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use in the manufacture of synthetic threads
Assignee: Akzona Inc
•
Filing: 1945-11-23
•
Granted: 1947-07-22
•
Expires: 1965-11-23
Abstract
No abstract record available.
Inventors
- 👤 William V Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:41
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0454; B; B65; B65H; B65H51/00; B65H51/20; B65H51/22; D06; D06B; D06B3/00; D06B3/04; D06B3/06; B65H2701/00; B65H2701/30; B65H2701/31
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) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |