US3469696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration apparatus
Assignee: AMF Inc
•
Filing: 1968-01-22
•
Granted: 1969-09-30
•
Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond Mark Petrucci
- 👤 Marcel Clarence Sicard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:30
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/54; B01D29/56; B01D29/58; C; C02; C02F; C02F9/00; C02F9/20; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA553819A
Cited
US2521802A
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US3250397A
Cited
US3254771A
Cited
US3327859A
Cited
US3342340A
Cited
US3357563A
Cited
US3342335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |