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US2467003A
Expired / Lapsed
US
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Clarifier
Assignee: Mirrlees Watson Co Ltd
•
Filing: 1944-03-27
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Granted: 1949-04-12
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Expires: 1964-03-27
Abstract
No abstract record available.
Inventors
- 👤 Niels B Bach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:24
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2427; B01D21/003; B01D21/0036; B01D21/0039; B01D21/0042; B01D21/10; B01D21/12; B01D21/14; B01D21/18; B01D21/186; B01D21/2405; B01D21/0006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |