Patent US3516916A successfully refreshed from Google Patents.
US3516916A
Expired / Lapsed
US
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Galvanic cell of equipment for determining the oxygen concentration of a gas mixture or vapor mixture
Assignee: BASF SE
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Filing: 1966-08-24
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Granted: 1970-06-23
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Expires: 1986-08-24
Abstract
No abstract record available.
Inventors
- 👤 Karl Ackermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M4/00; H01M4/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US913390A
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US2898282A
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US3223597A
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US3328206A
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US3208926A
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US3097974A
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US3315270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |