Patent US3476252A successfully refreshed from Google Patents.
US3476252A
Expired / Lapsed
US
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Reservoir filter assembly
Assignee: Marvel Engineering Co
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Filing: 1966-04-26
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Granted: 1969-11-04
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Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Walter J Kudlaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:53
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/88; B01D29/92; B01D29/96; B01D35/00; B01D35/14; B01D35/143; B01D35/147; B01D35/153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778596A
Cited
US2061343A
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US2440487A
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US2767851A
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US3074561A
Cited
US3193100A
Cited
US3317048A
Cited
US3388801A
Cited
US3394815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |