Patent US2918138A successfully refreshed from Google Patents.
US2918138A
Expired / Lapsed
US
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Disposable and cleanable filter
Assignee: Motors Liquidation Co
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Filing: 1957-02-13
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Granted: 1959-12-22
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Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Donald B Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1615; B01D39/18; B01D46/00; B01D46/24; B01D46/52; B01D46/521; B01D2275/00; B01D2275/10; B01D2279/00; B01D2279/60; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1898027A
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US2019241A
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US2389435A
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US2372437A
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US2664964A
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US2521985A
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US2732031A
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US2784132A
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US2813596A
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US2835341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |