The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 1977
Filed:
Oct. 03, 1975
Applicant:
Inventors:
Felix P Tolosa, Alexandria, VA (US);
Miles G Hossom, Alexandria, VA (US);
Assignee:
Dynatech Laboratories, Incorporated, Alexandria, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
401061 ;
Abstract
A test plate reader wherein a transparent test plate having a multiplicity of material containing wells is located across a light path, and a target having a pattern of opaque areas corresponding in number and location to the wells is interposed in the light path between the light source and the plate, so that the wells may be viewed against a brighter uniformly lighted background for improved contrast.