Title:
Folding stairway
United States Patent 2496773

Inventors:
Brown, Byron D.
Publication Date:
02/07/1950
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Assignee:
Brown, Byron D.
Primary Class:
182/78
Other Classes:
454/354, 182/163, 182/129
International Classes:
E04F11/06; E04F11/02
Other References:
None