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:
Aug. 25, 1981
Filed:
Aug. 16, 1979
Applicant:
Inventor:
Vladimir Ignatjev, Norwalk, CT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324 725 ; 324 96 ; 324457 ; 324133 ; 340784 ;
Abstract
The disclosure is of an air ion and charge detector comprising a liquid crystal display device having an indicator electrode and a reference electrode, and connected to detect air ions or electrical charge and provide a visual indication thereof.