US2391534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator
Assignee: Alstom Power Inc
•
Filing: 1944-06-02
•
Granted: 1945-12-25
•
Expires: 1964-06-02
Abstract
No abstract record available.
Inventors
- 👤 William D Yerrick
- 👤 Jensen Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:39
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D46/0002; B01D46/0013; B01D46/54; B01D46/543; B01D46/66; B01D46/70; B01D46/72; B01D50/00; B01D50/20; B01D2273/00; B01D2273/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-24 | 1949-06-25 | 1949-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-24 | 1953-06-25 | 1953-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-24 | 1957-06-25 | 1957-12-25 | $7700.00 | Window Closed / Lapsed |