US2996145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter sealing means
Assignee: Motors Liquidation Co
•
Filing: 1958-09-17
•
Granted: 1961-08-15
•
Expires: 1978-09-17
Abstract
No abstract record available.
Inventors
- 👤 William F Thornburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:30
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/24; B01D46/2403; B01D46/2411; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; F02M35/02475; F02M35/02483; F02M35/14; B01D2271/00; B01D2271/02; Y; Y10; Y10S; Y10S264/00; Y10S264/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB329099A
Cited
US2122111A
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US2170074A
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FR857420A
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FR50786E
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US2632526A
Cited
US2732031A
Cited
US2771156A
Cited
US2848065A
Cited
AT196667B
Cited
US2871976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |