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:
Nov. 26, 1985
Filed:
Aug. 20, 1984
Applicant:
Inventors:
Wolf Ziemer, Berlin, DE;
Wilhelm Holle, Munzenberg, DE;
Assignee:
Flakt Aktiebolag, Nacka, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04H / ;
U.S. Cl.
CPC ...
52 28 ; 98 331 ;
Abstract
Ceiling construction for clean rooms in which beneath a main ceiling (3) a lower ceiling (18) is mounted which is formed by a light and air permeable capillary structure (19), so that, with a high light transmission factor in respect of optimal and simultaneously dazzle free illumination of the clean room a turbulence-free laminar air flow is possible in the clean room.