US2925144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating dust from gas, particularly hot gas
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1956-02-07
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Granted: 1960-02-16
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Expires: 1976-02-07
Abstract
No abstract record available.
Inventors
- 👤 Kroll Werner Otto Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:19
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/04; B01; B01D; B01D46/00; B01D46/10; B01D46/12; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US858607A
Cited
GB191110029A
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US1436569A
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US1484260A
Cited
US1632813A
Cited
GB190550A
Cited
US1582499A
Cited
DE746886C
Cited
US2630878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |