US2537558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of solids from gases
Assignee: Alstom Power Inc
•
Filing: 1947-05-10
•
Granted: 1951-01-09
•
Expires: 1967-05-10
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Tigges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/01; B03C3/014; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1185136A
Cited
US1730461A
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US2029285A
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US2215807A
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US2382253A
Cited
US2422564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |