Patent US2728217A successfully refreshed from Google Patents.
US2728217A
Expired / Lapsed
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Oxygen analyzer
Assignee: Hays Corp
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Filing: 1952-01-10
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Granted: 1955-12-27
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Expires: 1972-01-10
Abstract
No abstract record available.
Inventors
- 👤 Robert D Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:38
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN OXYGEN ANALYZER COMPRISING A REFRIGERATED CHAMBER SUBJECT TO VARIATIONS FROM A PREDETERMINED OPTIMUM TEMPERATURE, AN OXYGEN ANALYZER UNIT OF THE TYPE ACTUATED BY THE PARAMAGNETIC PROPERTIES OF OXYGEN AND SENSITIVE TO TEMPERATURE VARIATIONS, AN ENCLOSURE WITHIN SAID CHAMBER FOR RECEIVING SAID ANALYZER UNIT AND ISOLATING SAID ANALYZER UNIT FROM THE DIRECT EFFECT OF THE COMPLETE RANGE OF TEMPERATURE VARIATIONS IN SAID CHAMBER, GAS CONDUITS EXTENDING TO SAID ANALYZER FROM A POINT EXTERIOR THEREOF, AND POWER LEADS EXTENDING TO SAID ANALYZER FROM A POINT EXTERIOR THEREOF.
Claim 2
Dependent Claim
86 words
AN OXYGEN ANALYZER COMPRISING A REFRIGERATED CHAMBER SUBJECT TO VARIATIONS FROM A PREDETERMINED OPTIMUM TEMPERATURE, AN OXYGEN ANALYZER UNIT OF THE TYPE ACTUATED BY THE PARAMAGNETIC PROPERTIES OF OXYGEN AND SENSITIVE TO TEMPERATURE VARIATIONS, AN ENCLOSURE WITHIN SAID CHAMBER FOR RECEIVING SAID ANALYZER UNIT AND ISOLATING SAID ANALYZER UNIT FROM THE DIRECT EFFECT OF THE COMPLETE RANGE OF TEMPERATURE VARIATIONS IN SAID CHAMBER, GAS CONDUITS EXTENDING TO SAID ANALYZER FROM A POINT EXTERIOR THEREOF, AND POWER LEADS EXTENDING TO SAID ANALYZER FROM A POINT EXTERIOR THEREOF.
References Cited (Backward Citations)
DE701478C
Cited
US2482753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |