US2933600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective infra-red gas analyzer
Assignee: Union Carbide Corp
•
Filing: 1954-06-28
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Granted: 1960-04-19
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Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Stanford B Spracklen
- 👤 Sterling T Martin
- 👤 Louis J Rogers
- 👤 Charles W Capehart
- 👤 Raymond B Fertig
- 👤 Charles G Fellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2049387A
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US2249672A
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US2545162A
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US2668243A
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US2718597A
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US2683794A
Cited
US2723350A
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US2688090A
Cited
US2754424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |