US2425508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust separator, especially for carburetor air intake ducts
Assignee: Individual
•
Filing: 1945-01-23
•
Granted: 1947-08-12
•
Expires: 1965-01-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Chilton
- 👤 Charles E Lapple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:04
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04; B; B64; B64D; B64D33/00; B64D33/02; B64D2033/0246; B64D2033/0266; B64D2033/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE381956C
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US697493A
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US1553249A
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US1870809A
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US1962685A
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US2362346A
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US2173893A
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US2286803A
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US2407194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |