Patent US2307957A successfully refreshed from Google Patents.
US3526577A
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Method and apparatus for gas measurement
Assignee: Yellow Springs Instrument Co Inc
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Filing: 1966-12-13
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Granted: 1970-09-01
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Expires: 1986-12-13
Abstract
No abstract record available.
Inventors
- 👤 Everett W Molloy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB707323A
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US2913386A
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US3208926A
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US3196100A
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US3260656A
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US3227643A
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US3272725A
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US3328277A
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US3367850A
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US3454485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |