Patent US2461736A successfully refreshed from Google Patents.
US2461736A
Expired / Lapsed
US
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Coffee filter
Assignee: Individual
•
Filing: 1946-03-25
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Granted: 1949-02-15
•
Expires: 1966-03-25
Abstract
No abstract record available.
Inventors
- 👤 John E Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:40
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2366951A
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US755967A
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US1006886A
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US2108684A
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US2211414A
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US2190965A
Cited
US2289498A
Cited
US2370674A
Cited
US2392656A
Cited
US2390269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |