US2605904A
Expired / Lapsed
US
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Assignee: ENGINE LIFE PRODUCTS Corp
•
Filing: 1949-04-04
•
Granted: 1952-08-05
•
Expires: 1969-04-04
Abstract
No abstract record available.
Inventors
- 👤 Frank R Ogilvie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:39
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/54; B01D35/00; B01D35/14; B01D35/147; F; F01; F01M; F01M1/00; F01M1/10; F01M2001/105; F01M2001/1064; Y; Y10; Y10S; Y10S210/00; Y10S210/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1406216A
Cited
US2156329A
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US2342948A
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US2454030A
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US2478109A
Cited
US2533266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |