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Title:
Aircraft ladder
Document Type and Number:
United States Patent 1439030
Inventors:
Karl, Stahl
Publication Date:
12/19/1922
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Referenced by:
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Assignee:
Firm, Luftschiffbau Zeppelin GM.
Primary Class:
244/129.600
Other Classes:
182/160, 182/96
International Classes:
B64B1/40
;
E06C1/383
;
B64B1/00
;
E06C1/00
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