US2804937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter with orderly arranged filaments
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1953-10-21
•
Granted: 1957-09-03
•
Expires: 1973-10-21
Abstract
No abstract record available.
Inventors
- 👤 Donald S Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:40
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326176A
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US1056722A
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US1574422A
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US2266631A
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US2355822A
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US2425235A
Cited
US2516340A
Cited
US2634671A
Cited
US2619188A
Cited
US2612966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |