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US3429446A
Expired / Lapsed
US
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Apparatus for filtering treating liquor in wet processing machines of the textile industry
Assignee: Joh Kleinewefers Soehne KG
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Filing: 1966-05-04
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Granted: 1969-02-25
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Hermann Vorderbrugge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:03
CPC Classifications
D; D06; D06B; D06B7/00; D06B23/00; D06B23/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |