Patent US2427097A successfully refreshed from Google Patents.
US2427097A
Expired / Lapsed
US
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Shrinkproofing and feltproofing of keratinous textile fibers
Assignee: Individual
•
Filing: 1944-08-23
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Granted: 1947-09-09
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Expires: 1964-08-23
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
- 👤 Weisberg Mark
- 👤 Beer Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:55
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787923A
Cited
GB191113088A
Cited
DE563387C
Cited
DE647566C
Cited
DE656112C
Cited
DE659116C
Cited
US2144824A
Cited
GB519343A
Cited
US2311507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |