Patent US4279795A successfully refreshed from Google Patents.
US2525754A
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US
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Conductivity cell
Assignee: Hall Labs LLC
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Filing: 1948-09-29
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Granted: 1950-10-17
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Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Albrecht Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; G01N27/07; A; A47; A47L; A47L15/00; A47L15/0018; A47L15/0055; A47L15/42; A47L15/44; A47L15/449
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1592979A
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US1774319A
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US1797817A
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US1898209A
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US2000668A
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US2437134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |