US2535181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbidity detector
Assignee: Permutit Co
•
Filing: 1947-07-21
•
Granted: 1950-12-26
•
Expires: 1967-07-21
Abstract
No abstract record available.
Inventors
- 👤 Arnold D Way
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:53
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/05; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/534; G01N21/84; G01N21/85; G01N15/00; G01N15/10; G01N15/14; G01N15/1404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053665A
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US1496635A
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US1785392A
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US1785393A
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US1809999A
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US1814020A
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US1994768A
Cited
US1979649A
Cited
US2026743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |