US2690813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator for dust carrying gases
Assignee: Individual
•
Filing: 1950-10-26
•
Granted: 1954-10-05
•
Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Diebold Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:02
CPC Classifications
B; B01; B01D; B01D50/00; B04; B04C; B04C5/00; B04C5/14; B04C5/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE184600C
Cited
US772689A
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US841984A
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US992531A
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US1717369A
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US1756909A
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US1841556A
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DE614016C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |