Patent US3253468A successfully refreshed from Google Patents.
US3253468A
Expired / Lapsed
US
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Ultramicro sampling device
Assignee: Dade Reagents Inc
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Filing: 1964-09-24
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Granted: 1966-05-31
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Expires: 1984-09-24
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:21
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN AN ULTRAMICRO SAMPLING DEVICE, A VALVE BLOCK HAVING AN INLET PASSAGE AND ALSO HAVING A THROUGH BORE INTERSECTING SAID INLET PASSAGES, AN OPEN-ENDED VALVE TUBE SLIDABLY MOUNTED WITHIN SAID AND BEING PROVIDED WITH A PAIR OF AXIALLY-SPACED SIDE WALL OPENINGS INTERMEDIATE SAID ENDS, BLOCKING MEANS WITHIN SAID TUBE BETWEEN SAID SIDE WALL OPENINGS, SAID TUBE BEING SLIDABLE BETWEEN A FIRST POSITION WHEREIN ONE OF SAID SIDE OPEN-
Claim 2
Dependent Claim
68 words
IN AN ULTRAMICRO SAMPLING DEVICE, A VALVE BLOCK HAVING AN INLET PASSAGE AND ALSO HAVING A THROUGH BORE INTERSECTING SAID INLET PASSAGES, AN OPEN-ENDED VALVE TUBE SLIDABLY MOUNTED WITHIN SAID AND BEING PROVIDED WITH A PAIR OF AXIALLY-SPACED SIDE WALL OPENINGS INTERMEDIATE SAID ENDS, BLOCKING MEANS WITHIN SAID TUBE BETWEEN SAID SIDE WALL OPENINGS, SAID TUBE BEING SLIDABLE BETWEEN A FIRST POSITION WHEREIN ONE OF SAID SIDE OPEN-
References Cited (Backward Citations)
GB735638A
Cited
US2729974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |