US3460322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas filter mounting structure
Assignee: American Air Filter Co Inc
•
Filing: 1967-10-05
•
Granted: 1969-08-12
•
Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Richard D Rivers
- 👤 Jimmie D York Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:46
CPC Classifications
B; B01; B01D; B01D46/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2552847A
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US2884091A
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US3158457A
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US3131044A
Cited
FR1342931A
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GB998032A
Cited
US3250063A
Cited
US3229609A
Cited
US3370408A
Cited
US3350862A
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US3360910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |