Patent US2764681A successfully refreshed from Google Patents.
Patent US2787903A successfully refreshed from Google Patents.
US2787903A
Expired / Lapsed
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Measuring apparatus
Assignee: Honeywell Inc
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Filing: 1953-06-29
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Granted: 1957-04-09
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard B Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
APPARATUS FOR DETECTING THE PARTIAL PRESSURE OF OXYGEN IN AN ATMOSPHERE CONTAINING SULPHUROUS COMPONENTS, COMPRISING A FIRST ENCLOSED CHAMBER HAVING AS A GASEOUS INLET A FIRST GASEOUS PERMEATING ELEMENT WHICH WILL PASS OXYGEN AND EXCLUDE THE SULPHUROUS GASES, SAID CHAMBER BEING ARRANGED FOR EXTENSION INTO THE ATOMSPHERE, A SECOND ENCLOSED CHAMBER POSITIONED WITHIN SAID FIRST CHAMBER AND HAVING A GASEOUS INLET FORMED OF A SILVER ELEMENT WHICH HAS A HIGH SELECTIVE PERMEABILITY OF OXYGEN, AND COUPLING MEANS ARRANGED FOR CONNECTING SAID SECOND CHAM-
Claim 2
Dependent Claim
83 words
APPARATUS FOR DETECTING THE PARTIAL PRESSURE OF OXYGEN IN AN ATMOSPHERE CONTAINING SULPHUROUS COMPONENTS, COMPRISING A FIRST ENCLOSED CHAMBER HAVING AS A GASEOUS INLET A FIRST GASEOUS PERMEATING ELEMENT WHICH WILL PASS OXYGEN AND EXCLUDE THE SULPHUROUS GASES, SAID CHAMBER BEING ARRANGED FOR EXTENSION INTO THE ATOMSPHERE, A SECOND ENCLOSED CHAMBER POSITIONED WITHIN SAID FIRST CHAMBER AND HAVING A GASEOUS INLET FORMED OF A SILVER ELEMENT WHICH HAS A HIGH SELECTIVE PERMEABILITY OF OXYGEN, AND COUPLING MEANS ARRANGED FOR CONNECTING SAID SECOND CHAM-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |