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:
Apr. 19, 1977
Filed:
Sep. 22, 1975
William Stelzer, Milford, MI (US);
Other;
Abstract
A louvered hot and cold insulating window for admitting light to a building, characterized by the use of at least one pair of horizontally level superposed transparent panes sealingly held in spaced relationship to contain a layer of still air to serve as a heat and cold insulator, and structural means including light reflecting louvers arranged to sealingly support said transparent panes and to form a sash that can be selectively inserted in the walls of a building where in one position for use in cold weather the top of said pair of panes is facing the inside of said building and the underside is exposed to the outside of said building, and in a reversed position for use in hot weather said top is exposed to the outside of said building and said underside faces the inside of said building.