Patent US1752789A successfully refreshed from Google Patents.
US1752789A
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Agitation and settling apparatus
Assignee: Dorr Co
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Filing: 1925-08-07
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Granted: 1930-04-01
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Expires: 1945-08-07
Abstract
No abstract record available.
Inventors
- 👤 Frank A Downes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:40
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/006; B; B01; B01D; B01D21/00; B01D21/0006; B01D21/0012; B01D21/0018; B01D21/003; B01D21/0039; B01D21/0042; B01D21/10; B01D21/12; B01D21/14; B01D21/16; B01D21/18; B01D21/186; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2444; B01D21/245; B01D21/2488; B01D24/00; B01D24/02; B01D24/20; B01D24/22; B01D36/00; B01D36/04; B01D2221/00; B01D2221/06
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) | 1933-03-31 | 1933-09-30 | 1934-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-31 | 1937-09-30 | 1938-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-31 | 1941-09-30 | 1942-04-01 | $7700.00 | Window Closed / Lapsed |