US3104966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filters
Assignee: FRANN Corp
•
Filing: 1960-06-27
•
Granted: 1963-09-24
•
Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Roger T Goulet
- 👤 Hugh E Pritchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:24
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/0002; B01D46/0004; B01D46/24; B01D46/2403; B01D46/2411; B01D46/2414; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; F24; F24F; F24F8/00; F24F8/10; B01D2265/00; B01D2265/02; B01D2271/00; B01D2271/02; B01D2271/022; B01D2279/00; B01D2279/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036284A
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US2037884A
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US2510824A
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US2689551A
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US2675886A
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US2963111A
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US2939775A
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US2962121A
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US2979159A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |