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Patent US2446839A successfully refreshed from Google Patents.
US2446839A
Expired / Lapsed
US
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Bottom roll clearer for textile machines
Assignee: WILLIAM O JUNKER
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Filing: 1946-12-17
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Granted: 1948-08-10
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Expires: 1966-12-17
Abstract
No abstract record available.
Inventors
- 👤 William F Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:11
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/60; D01H5/62
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) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |