Title:
Folding stair
United States Patent 2321499
Inventors:
Marschke, Reinhold B.
Publication Date:
06/08/1943
Export Citation:
Click for automatic bibliography generation
Assignee:
Marschke, Reinhold B.
Primary Class:
182/81
International Classes:
E04F11/04; E04F11/02
View Patent Images:
Download PDF 2321499        PDF help