US2582133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cleaning
Assignee: Alstom Power Inc
•
Filing: 1947-05-10
•
Granted: 1952-01-08
•
Expires: 1967-05-10
Abstract
No abstract record available.
Inventors
- 👤 Karlsson Per Hilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:54
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE545523C
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DE339625C
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FR713691A
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DE656258C
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GB428171A
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GB469823A
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US2351089A
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US2333551A
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US2443780A
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US2409563A
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US2422564A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |