Patent US2866518A successfully refreshed from Google Patents.
US2866518A
Expired / Lapsed
US
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Apparatus for equalizing pressures in multiple cyclone dust collectors
Assignee: Western Precipitation Corp
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Filing: 1954-07-06
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Granted: 1958-12-30
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Roland L Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:25
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28; Y; Y10; Y10S; Y10S55/00; Y10S55/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325136A
Cited
US2069483A
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US2209339A
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US2281610A
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US2374715A
Cited
GB687097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |