US2586935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas filter
Assignee: Fram Corp
•
Filing: 1948-03-26
•
Granted: 1952-02-26
•
Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 Gerson Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:49
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; Y; Y10; Y10S; Y10S55/00; Y10S55/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1898027A
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US2243082A
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US2355822A
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US2331693A
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GB573082A
Cited
US2372437A
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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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |