US2331944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fibers from minerals and like materials
Assignee: Individual
•
Filing: 1939-02-03
•
Granted: 1943-10-19
•
Expires: 1959-02-03
Abstract
No abstract record available.
Inventors
- 👤 Pazsiczky Gedeon Von
- 👤 Steingraeber Hellmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/022; C03C25/465; C03C25/47; C03C25/66; C03C25/68; Y; Y10; Y10S; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 0
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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) | 1946-10-18 | 1947-04-19 | 1947-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-10-18 | 1951-04-19 | 1951-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-10-18 | 1955-04-19 | 1955-10-19 | $7700.00 | Window Closed / Lapsed |