Patent US3136617A successfully refreshed from Google Patents.
US3136617A
Expired / Lapsed
US
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Air filter container
Assignee: Individual
•
Filing: 1961-09-25
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Granted: 1964-06-09
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Wachter Karl-August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:43
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; A; A62; A62B; A62B19/00; B; B01; B01D; B01D46/00; B01D46/0001; B01D46/10; B01D46/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL80721C
Cited
US2108283A
Cited
US2329248A
Cited
US2637540A
Cited
US2682315A
Cited
US2754928A
Cited
US2928496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |