US2701622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculation of cleaning air in precipitator
Assignee: Alstom Power Inc
•
Filing: 1953-07-21
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Granted: 1955-02-08
•
Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Hodson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:28
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/80; B03C3/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |