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Patent US1798623A successfully refreshed from Google Patents.
US1798623A
Expired / Lapsed
US
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Apparatus for the fluid treatment of textile fibers
Assignee: Individual
•
Filing: 1929-02-21
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Granted: 1931-03-31
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Expires: 1949-02-21
Abstract
No abstract record available.
Inventors
- 👤 Obermaier Otto Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/14; D; D06; D06B; D06B5/00; D06B5/12; D06B5/16; D06B5/26; D06B2700/00; D06B2700/19
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) | 1934-03-30 | 1934-09-29 | 1935-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-30 | 1938-09-29 | 1939-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-30 | 1942-09-29 | 1943-03-31 | $7700.00 | Window Closed / Lapsed |