Patent US3621719A successfully refreshed from Google Patents.
US3621719A
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US
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Analytical apparatus
Assignee: Individual
•
Filing: 1969-11-04
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Granted: 1971-11-23
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Expires: 1989-11-04
Abstract
Abstract APPARATUS SUITABLE FOR LOADING LIQUID SAMPLES ONTO AN ANALYTICAL DEVICE SUCH AS A CHROMATOGRAPHIC COLUMN. THE APPARATUS HAS A ROTATABLE BARREL CONTAINING CHAMBERS WHICH ARE FILLED WITH LIQUID, AND A GENEVA MECHANISM TO CONTROL ROTATION OF THE BARREL.
Inventors
- 👤 Geoffrey Willoughby Goodman
- 👤 Lawrence Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:57
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097; G01N30/00; G01N30/02; G01N30/04; G01N30/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |