US3497323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the concentration of combustible gases and vapors
Assignee: Auergesellschaft GmbH
•
Filing: 1966-02-18
•
Granted: 1970-02-24
•
Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Hans-Peter Neubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; G01N27/18; G01N27/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2698223A
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US2617716A
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US2687342A
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US2762568A
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US2879142A
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US2888330A
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US2901329A
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US3237181A
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US3239828A
Cited
US3311455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |