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. 27, 1981
Filed:
Jun. 08, 1979
Applicant:
Inventor:
Edward B Stultz, Richmond, VA (US);
Assignee:
Philip Morris Incorporated, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 38 ; 73159 ; 219384 ;
Abstract
Porosity measuring apparatus for a moving web of sheet material comprising a sensor having a chamber and a wall provided with apertures communicating with the chamber and of number, spacing and dimension sufficient to obtain an air seal between the moving web and wall during application of a vacuum to the chamber.