US1803532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation suitable for developing dyeings
Assignee: General Aniline Works Inc
•
Filing: 1925-08-12
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Granted: 1931-05-05
•
Expires: 1945-08-12
Abstract
No abstract record available.
Inventors
- 👤 Krzikalla Hans
- 👤 Schnitzspahn Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:36
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0079; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/912
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) | 1934-05-04 | 1934-11-03 | 1935-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-04 | 1938-11-03 | 1939-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-04 | 1942-11-03 | 1943-05-05 | $7700.00 | Window Closed / Lapsed |