US3566697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic septum changing inlet
Assignee: Hamilton Co Inc
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Filing: 1969-07-28
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Granted: 1971-03-02
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Expires: 1989-07-28
Abstract
Abstract A SEPTUM CHANGING INLET APPARATUS FOR CHROMATOGRAPHS HAVING A PORTED BODY AND A SEPTUM DISC CARRIED BY A ROTATABLY MOUNTED RATCHET WHEEL HAVING A PLURALITY OF ANNULARLY SPACED OUTER PORTS WHICH MAY BE SUCCESSIVELY MOVED INTO ALIGNMENT WITH THE PORT OF THE BODY, THERE BEING MEANS FOR SUCCESSIVELY ROTATING THE RATCHET WHEEL TO MOVE SAID OUTER PORTS THEREOF RESPECTIVELY INTO ALIGNMENT WITH THE PORT IN THE BODY.
Inventors
- 👤 Tom H Vannus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/16; G01N30/18
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |