US3502218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water separating fuel filters
Assignee: Motors Liquidation Co
•
Filing: 1967-05-23
•
Granted: 1970-03-24
•
Expires: 1987-05-23
Abstract
No abstract record available.
Inventors
- 👤 Derrick Percival Tuffnell
- 👤 Stanley William Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/003; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/88; B01D29/92; B01D29/925; B01D35/00; B01D35/30; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2864505A
Cited
BE550998A
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US3228527A
Cited
US3227280A
Cited
US3187895A
Cited
US3262572A
Cited
US3390778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |