US3486743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage vapor-liquid contactor
Assignee: Baker Perkins Inc
•
Filing: 1967-06-16
•
Granted: 1969-12-30
•
Expires: 1987-06-16
Abstract
No abstract record available.
Inventors
- 👤 David B Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:57
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/08; B01D3/085; B01D1/00; B01D1/0088; B01D1/22; B01D1/222; B01D1/223; B01D3/14; B01D3/30; B01D45/00; B01D45/12; B01D45/14; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |