US2920478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor fractometer column
Assignee: Applied Biosystems Inc
•
Filing: 1957-06-24
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Granted: 1960-01-12
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Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Marcel J E Golay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; B; B01; B01D; B01D53/00; B01D53/02; B01D53/025; G01N30/50; G01N30/56; G01N30/60; G01N30/6052; G01N30/6073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2826908A
Cited
US2465229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |