Patent US2491584A successfully refreshed from Google Patents.
US2491584A
Expired / Lapsed
US
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Shrinkproofing wool and materials therefor
Assignee: Montclair Research Corp
•
Filing: 1945-09-07
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Granted: 1949-12-20
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Expires: 1965-09-07
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:16
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/693
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1901354A
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US2281613A
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US2211032A
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US2344843A
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US2335321A
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US2386447A
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US2343093A
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US2329622A
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US2406958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |