US2780773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductivity cell
Assignee: Mcnab Inc
•
Filing: 1953-01-23
•
Granted: 1957-02-05
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Kenneth F Channon
- 👤 Weems E Estelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:38
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; G01N27/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23282E
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US1670640A
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US2215213A
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US2250471A
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US2213209A
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US2345071A
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US2328853A
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US2525754A
Cited
US2560209A
Cited
US2653294A
Cited
US2611007A
Cited
US2654862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |