Title:
Airship
United States Patent 1717552

Inventors:
Dunn, Alpin I.
Publication Date:
06/18/1929
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Assignee:
Dunn, Alpin I.
Primary Class:
244/25
Other Classes:
290/55, 244/58, 180/2.200, 415/7, 415/121.300, 290/44, 415/908
International Classes:
B64D27/00