US3479798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method in the analysis of gases
Assignee: Individual
•
Filing: 1965-04-16
•
Granted: 1969-11-25
•
Expires: 1985-04-16
Abstract
No abstract record available.
Inventors
- 👤 Erik Ragnar Ryhage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:40
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/04; H01J49/0422; H01J49/0427; G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/72; G01N30/7206; G01N30/84; G01N2030/8423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1174631A
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US2627933A
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GB794834A
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US2892508A
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US2924630A
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US3246449A
Cited
US3104960A
Cited
US3239996A
Cited
FR1366968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |