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Title:
Stair climbing conveyance
United States Patent 3166138
Inventors:
Dunn Jr., Edward D.
Publication Date:
01/19/1965
Assignee:
Dunn Jr., Edward D.
Primary Class:
Other Classes:
180/9.1, 180/9.32, 180/9.48, 180/65.6, 280/5.22, 280/11, 280/211, 280/DIG.10
International Classes:
A61G5/06; B62D55/075
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Foreign References:
DE968705C
GB541253A