Patent US3621680A successfully refreshed from Google Patents.
US3621680A
Expired / Lapsed
US
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Method for treating knitted or woven broad material with liquid and an apparatus therefor
Assignee: Individual
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Filing: 1969-05-23
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Granted: 1971-11-23
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Expires: 1989-05-23
Abstract
Abstract SATISFACTORY TREATMENT, WITH A CIRCULATING LIQUID, OF BROAD FABRICS, SUCH AS JERSEY, TAFFETA AND CARPET, IS EFFECTED BY CIRCULATING UNIDIRECTIONALLY SUCH A FABRIC THROUGH A U-SHAPED PASSAGEWAY FORMED BY AN OUTER VESSEL OF A CONCAVE CROSS SECTIONAL CONFIGYRATION AND BY AN INNER ASSEMBLY OF A CONVEX CROSS SECTIONAL CONFIGURATION, OF A TREATING APPARATUS, WHILE ONLY LONGITUDUNALLY FOLDING THE FABRIC AS IT ENTERS IN SAID PASSAGEWAY.
Inventors
- 👤 Masao Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:44
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/02; D06B23/023; D06B3/00; D06B3/10
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |