US2461677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating suspended particles from gases
Assignee: Aerotec Corp
•
Filing: 1947-05-08
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Granted: 1949-02-15
•
Expires: 1967-05-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Burdock
- 👤 Philip F Best
- 👤 Charles B Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE643656C
Cited
US1723657A
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US1886548A
Cited
US2086882A
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US2341087A
Cited
US2433774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |