Patent US2717082A successfully refreshed from Google Patents.
US2717082A
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US
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Filter element with end sealing means
Assignee: WARNER LEWIS Co
•
Filing: 1952-04-05
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Granted: 1955-09-06
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Expires: 1972-04-05
Abstract
No abstract record available.
Inventors
- 👤 Kelly F Mccann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:05
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/11; B01D29/13; B01D29/15; B01D29/54; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0453; B01D2201/0469; B01D2201/0476; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR641366A
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US1882078A
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FR751730A
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US2173978A
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US2376739A
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US2440487A
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US2439936A
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US2454030A
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US2584387A
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US2584394A
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US2521060A
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US2487146A
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US2545374A
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US2548400A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |