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:
Jul. 28, 1992
Filed:
Mar. 14, 1991
Applicant:
Inventor:
Edward N Koop, Olathe, KS (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24F / ;
U.S. Cl.
CPC ...
454282 ; 454905 ;
Abstract
A light restricting housing for a ventilating system including a flow-through frame member having a plurality of spaced parallel blade members disposed there, the blade members being contoured to obscure direct passage of light therethrough and including displacement means on the planar surfaces thereof to hold the blade members in spaced relation to each other.