Patent EP0419275A1 successfully refreshed from Google Patents.
US2739478A
Expired / Lapsed
US
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Apparatus for measuring mass gas flow and application thereof to gas-liquid ratio control system
Assignee: Individual
•
Filing: 1950-04-14
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Granted: 1956-03-27
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Expires: 1970-04-14
Abstract
No abstract record available.
Inventors
- 👤 Franklin F Offner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:37
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/88; G01F1/05; G01F1/34; G01F1/50; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135; G05D11/137; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
APPARATUS FOR MEASURING FLOW OF A GAS COMPRISING AN ENCLOSED CHAMBER, A SOURCE OF IONIZING PARTICLES WITHIN SAID CHAMBER, MEANS ADMITTING THE GAS TO SAID CHAMBER AT THE STATIC PRESSURE THEREOF, A PAIR OF SPACED ELECTRODES WITHIN SAID CHAMBER, MEANS FOR APPLYING A POTENTIAL DIFFERPOTENTIAL DIFFERENCE PRODUCING AN ELECTRODE CURRENT FACTOR PROPORTIONAL TO THE DENSITY OF THE GAS, MEANS PRODUCING A SECOND FACTOR FUNCTIONALLY RELATED TO THE DYNAMIC PRESSURE OF THE GAS, AND MEANS COMBINING SAID FACTORS TO EFFECT THE PRODUCT THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |