US2542549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating suspended particles from gases
Assignee: THERMIX CORP
•
Filing: 1948-07-17
•
Granted: 1951-02-20
•
Expires: 1968-07-17
Abstract
No abstract record available.
Inventors
- 👤 Charles B Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:35
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2059521A
Cited
US1757432A
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US1997125A
Cited
US2082242A
Cited
US1970077A
Cited
US2331786A
Cited
US2348785A
Cited
GB580936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |