US2643736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping vane for separators
Assignee: Individual
•
Filing: 1951-07-30
•
Granted: 1953-06-30
•
Expires: 1971-07-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1616802A
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US1686144A
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US1803854A
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US1928706A
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US1896656A
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US2180586A
Cited
US2440860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |