US2792909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor exhaust gas clarifier
Assignee: Individual
•
Filing: 1954-08-16
•
Granted: 1957-05-21
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Court
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/0214; F01N3/005; F01N2290/00; F01N2290/02; F01N2290/04; F01N2330/00; F01N2330/10; F01N2370/00; F01N2370/22; F01N2450/00; F01N2450/30; F01N2470/00; F01N2470/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30; Y10S60/00; Y10S60/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US602964A
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US1388480A
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US1328044A
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DE410864C
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US1782540A
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US1948791A
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US2247786A
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FR878467A
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US2349676A
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FR1070633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |