Patent US1975504A successfully refreshed from Google Patents.
US1975504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for preparing artificial threads
Assignee: RICHARD SCHREIBER GASTELL
•
Filing: 1930-12-05
•
Granted: 1934-10-02
•
Expires: 1950-12-05
Abstract
No abstract record available.
Inventors
- 👤 Formhals Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/0007; D01D5/0061; D01D5/0076
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-10-01 | 1938-04-02 | 1938-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-01 | 1942-04-02 | 1942-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-01 | 1946-04-02 | 1946-10-02 | $7700.00 | Window Closed / Lapsed |