Patent EP0418035A1 successfully refreshed from Google Patents.
US2586169A
Expired / Lapsed
US
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Apparatus for controlling and measuring the concentration of solutions
Assignee: Patent Management Inc
•
Filing: 1947-08-04
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Granted: 1952-02-19
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Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 Raymond V Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/045; G01N27/046; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1399181A
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US1701331A
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US1912188A
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US2269152A
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US2330394A
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US2372056A
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US2371636A
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US2450459A
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |