US2925629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing fibrous structures
Assignee: WALSCO Co
•
Filing: 1957-03-25
•
Granted: 1960-02-23
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sittel Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:21
CPC Classifications
D; D04; D04H; D04H11/00; D04H1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US668792A
Cited
US760494A
Cited
US884157A
Cited
US1510252A
Cited
US2048651A
Cited
US2231324A
Cited
US2357658A
Cited
US2462487A
Cited
US2702261A
Cited
US2719336A
Cited
FR1124895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |