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US3758275A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for providing test specimens in the form of spots

Assignee: Individual
•
Filing: 1971-07-02
•
Granted: 1973-09-11
•
Expires: 1991-07-02
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Abstract

Abstract AN APPARATUS FOR PROVIDING TEST SPECIMENS IN THE FORM OF SPOTS. THE APPARATUS INCLUDES A SUPPORTING STRUCTURE FOR SUPPORTING A SHEET MATERIAL WHICH IS TO RECEIVE THE SPOTS. A RACK IS PROVIDED TO HOLD BEAKERS OR OTHER CONTAINERS IN WHICH THE SPECIMEN MATERIAL IS SITUATED DISSOLVED IN SUITABLE LIQUID SOLVENT. A CARRIER STRUCTURE CARRIES A PLURALITY OF CAPILLARY TUBES WHICH HAVE RECEIVING ENDS SITUATED IN THE BEAKERS IN COMMUNICATION WITH THE SOLVENT THEREIN WHEN THE RACK IS PLACED AT A PREDETERMINED POSITION WITH RESPECT TO THE CARRIER STRUCTURE FOR THE CAPILLARY TUBES. THESE TUBES RESPECTIVELY HAVE DISCHARGE ENDS WHICH ARE SPACED SUITABLY FROM EACH OTHER AND LOCATED OVER THE SUPPORTING STRUCTURE FOR THE SHEET MATERIAL SO THAT THROUGH CAPILLARY ACTION THE SPECIMENS DISSOLVED IN THE SOLVENT WILL BE DEPOSITED ON THE SHEET MATERIAL TO FORM THEREON SPECIMENS IN THE FORM OF DRY SPOTS RESULTING FROM EVAPORATION OF THE SOLVENT.

Inventors

  • 👤 B Quame

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 07:32
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0241

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-10 1977-03-12 1977-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-10 1981-03-12 1981-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-10 1985-03-12 1985-09-11 $7700.00 Window Closed / Lapsed

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