Patent US1766166A successfully refreshed from Google Patents.
US1766166A
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Filtering apparatus
Assignee: GENTER THICKENER Co
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Filing: 1926-03-31
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Granted: 1930-06-24
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Expires: 1946-03-31
Abstract
No abstract record available.
Inventors
- 👤 John M Callow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:04
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/62; B01D29/66; B01D29/668; B01D2201/00; B01D2201/28; B01D2201/287
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) | 1933-06-23 | 1933-12-23 | 1934-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-23 | 1937-12-23 | 1938-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-23 | 1941-12-23 | 1942-06-24 | $7700.00 | Window Closed / Lapsed |