US3499532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filtering device
Assignee: Individual
•
Filing: 1966-05-09
•
Granted: 1970-03-10
•
Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 John R Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:27
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/164; B01D25/1645; B01D25/28; B01D25/282; B01D25/284; B01D25/32; B01D37/00; B01D37/02; B01D37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2790553A
Cited
US3121681A
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US3038611A
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US2971648A
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US2993559A
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US3270887A
Cited
US3289844A
Cited
US3342123A
Cited
US3360130A
Cited
US3349913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |