US2001992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing animal fibers
Assignee: General Aniline Works Inc
•
Filing: 1933-07-19
•
Granted: 1935-05-21
•
Expires: 1953-07-19
Abstract
No abstract record available.
Inventors
- 👤 Wagner Heinrich
- 👤 Krzikalla Hans
- 👤 Kirsch Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; D06P3/305
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) | 1938-05-20 | 1938-11-19 | 1939-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-20 | 1942-11-19 | 1943-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-20 | 1946-11-19 | 1947-05-21 | $7700.00 | Window Closed / Lapsed |