Patent US2963898A successfully refreshed from Google Patents.
US2963898A
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Gas chromatography unit
Assignee: Central Scientific Co
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Filing: 1957-08-27
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Granted: 1960-12-13
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Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Manning S Reynolds
- 👤 Arthur H Nakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/30; G01N2030/3084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2833151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |