US2903883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for measuring the relative amount of a paramagnetic gas in a gaseous mixture
Assignee: Office National d'Études et de Recherches Aérospatiales
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Filing: 1957-03-19
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Granted: 1959-09-15
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Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 Luft Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:57
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74; G01N27/02; G01N27/22; G01N27/24
Claims Analysis
Total Claims: 0
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |