Patent US2653674A successfully refreshed from Google Patents.
US2653674A
Expired / Lapsed
US
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Suppressor for solid particles and fumes
Assignee: Whiting Corp
•
Filing: 1949-11-10
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Granted: 1953-09-29
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Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Ortgies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:54
CPC Classifications
F; F23; F23J; F23J11/00; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR743172A
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US1312930A
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DE212293C
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GB189912011A
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GB190518915A
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US1112860A
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US1799084A
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FR707139A
Cited
US1976629A
Cited
US2041826A
Cited
US2308719A
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US2387345A
Cited
US2380826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |