Title:
Stair elevator
Document Type and Number:
United States Patent 2472943


Inventors:
Firestone, Howard E.
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Sponsored by:
Flash of Genius
Publication Date:
06/14/1949
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Assignee:
Firestone, Howard E.
Primary Class:
187/201
International Classes:
B66B9/08; B66B9/06
US Patent References:
1358062Stairway-elevator
1956650Loading and topping machine for cotton and the like
Foreign References:
CH21969A