US2539947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the continuous aftertreatment of flocculent textiles
Assignee: Akzona Inc
•
Filing: 1947-02-06
•
Granted: 1951-01-30
•
Expires: 1967-02-06
Abstract
No abstract record available.
Inventors
- 👤 Klerk Bastiaan Gijsbertus De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:10
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/02; D06B1/00; D06B1/02; D06B23/00; D06B23/14; D06B23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US675407A
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US899339A
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US1209465A
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US1775699A
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GB332003A
Cited
US2041711A
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US2306144A
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US2301803A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |