US2980179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone evaporator for residual liquor
Assignee: Babcock and Wilcox Co
•
Filing: 1954-06-25
•
Granted: 1961-04-18
•
Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr John Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:53
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/14; B04; B04C; B04C5/00; B04C5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1401176A
Cited
US678451A
Cited
US910074A
Cited
US1253234A
Cited
US1868632A
Cited
US2529045A
Cited
US2578315A
Cited
US2590905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |