Patent US2715944A successfully refreshed from Google Patents.
US2715944A
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US
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Rotating cell electric dust precipitator
Assignee: Individual
•
Filing: 1951-07-06
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Granted: 1955-08-23
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Expires: 1971-07-06
Abstract
No abstract record available.
Inventors
- 👤 Francis J Dohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:05
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/10; B03C3/34; B03C3/74; B03C3/78; Y; Y10; Y10S; Y10S55/00; Y10S55/34; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1412248A
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US1444092A
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GB290030A
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US2119297A
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US2333551A
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US2409563A
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US2486520A
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US2582133A
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US2609061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |