Patent US2390871A successfully refreshed from Google Patents.
US2390871A
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Apparatus for mixing and dispensing fluids of different densities
Assignee: AMERICAN UTILITIES Corp
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Filing: 1944-03-13
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Granted: 1945-12-11
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Expires: 1964-03-13
Abstract
No abstract record available.
Inventors
- 👤 Donald J Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/74; B01; B01F; B01F23/00; B01F23/20; B01F23/23; F; F17; F17C; F17C13/00; F17C13/002; F17C2265/00; F17C2265/02; F17C2265/025; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313
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) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |