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Patent US2440302A successfully refreshed from Google Patents.
US2440302A
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US
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Separating machine
Assignee: KATHERINE M SHERMAN
•
Filing: 1941-08-01
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Granted: 1948-04-27
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Expires: 1961-08-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:45
CPC Classifications
B; B41; B41L; B41L1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US286493A
Cited
US525449A
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US622454A
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US1375490A
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US1502669A
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US721116A
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US1477024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |