Patent US2149709A successfully refreshed from Google Patents.
US2149709A
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Textile assistants
Assignee: IG Farbenindustrie AG
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Filing: 1936-05-06
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Granted: 1939-03-07
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Expires: 1956-05-06
Abstract
No abstract record available.
Inventors
- 👤 Rein Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:49
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; C; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10T; Y10T442/00; Y10T442/20; Y10T442/2352
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) | 1942-03-06 | 1942-09-05 | 1943-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-06 | 1946-09-05 | 1947-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-06 | 1950-09-05 | 1951-03-07 | $7700.00 | Window Closed / Lapsed |