3877460 is referenced by 22 patents and cites 8 patents.

A hollow heat insulating door for a cooking oven and the like in which the insulating effect is achieved by a combination of an internal dead air space and an internal heat absorbing black body baffle adjacent to the viewing openings through the door. The disclosure also includes a door for a cooking oven in which aligned inner and outer glass panes are provided for viewing the interior of the oven with one of the panes being semi-opaque with artificial light within the oven shining through but outer natural light being substantially barred when the interior artificial light is absent.

Oven door
Application Number
Publication Number
Application Date
February 1, 1974
Publication Date
April 15, 1975
Ford Thomas D
Lotz Larry C
Hofgren Wegner Allen Stellman & McCord
Whirlpool Corporation
F23m 07/04
F24C 15/04
F24C 15/02
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