Patent US5644611A successfully refreshed from Google Patents.
US4137866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparation of blood samples
Assignee: Individual
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Filing: 1977-04-06
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Granted: 1979-02-06
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Expires: 1997-04-06
Abstract
Abstract Forming a blood trace of predetermined length and width on a flexible supporting strip by depositing a blood sample on the strip, contacting the sample with a trace tip carried by an adjacent strip and moving the sample relative to the tip through a predetermined course to control the width and length of said trace.
Inventors
- 👤 Charles P. Heanley
- 👤 Jozef K. Tylko
- 👤 David G. S. Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:28
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/2813
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
An apparatus for the laying of traces of peripheral blood comprising: a flexible strip and means for depositing a discrete drop of blood upon it; another flexible strip in which a plurality of trace laying members is punched axially at equal intervals and which when flexed over a sprocketed pulley projects the said trace laying members one at a time; means for disposing spatially the two flexible strips so that during the movement of the trace supporting strip there is always a stationary trace laying member protruding downward towards the trace supporting strip so that it will engage the deposited drop of blood when the said drop shall travel thereunder; forming and supporting an index of blood contained between the said travelling trace supporting strip and the facing it plane of the said stationary trace laying member thereby depositing upon the said trace supporting strip a blood trace.
Claim 2
Independent Claim
148 words
An apparatus for the laying of traces of peripheral blood comprising: a flexible strip and means for depositing a discrete drop of blood upon it; another flexible strip in which a plurality of trace laying members is punched axially at equal intervals and which when flexed over a sprocketed pulley projects the said trace laying members one at a time; means for disposing spatially the two flexible strips so that during the movement of the trace supporting strip there is always a stationary trace laying member protruding downward towards the trace supporting strip so that it will engage the deposited drop of blood when the said drop shall travel thereunder; forming and supporting an index of blood contained between the said travelling trace supporting strip and the facing it plane of the said stationary trace laying member thereby depositing upon the said trace supporting strip a blood trace.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |