Title:
Overhead flexible door
United States Patent 2831537
Inventors:
Ritter, Adolph P.
Publication Date:
04/22/1958
Export Citation:
Click for automatic bibliography generation
Assignee:
Ritter, Adolph P.
Primary Class:
160/201
Other Classes:
160/229.1
International Classes:
E05D15/16; E05D15/24; E06B3/48; E05D3/06; E05D15/16; E06B3/32; E05D3/00
View Patent Images:
Download PDF 2831537        PDF help
US Patent References:
2549301Articulated grain car door
2116847Flexible screen
1841898Hinge
1408076Folding door and shutter
Foreign References:
FR567822A
CA505101A