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:
Mar. 03, 1987
Filed:
Feb. 04, 1985
Applicant:
Inventor:
Ranjit Roy, Mt. Prospect, IL (US);
Assignee:
The Austin Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E06B / ;
U.S. Cl.
CPC ...
109 73 ; 521696 ; 109 / ;
Abstract
A radiation shielding door of massive concrete mounted to move parallel to a wall surface adjacent a door opening, while supported on a plurality of roller assemblies which travel along a rail mounted in the floor.