Title:
Folding stepladder
Document Type and Number:
United States Patent 2167157
Inventors:
Muehlberg, Karl O.
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Publication Date:
07/25/1939
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Assignee:
Muehlberg, Karl O.
Primary Class:
Other Classes:
182/172, 182/106, 182/116, 160/377
International Classes:
E06C1/38; E06C1/00