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Title:
Mechanical skeleton
Document Type and Number:
United States Patent 2472819
Inventors:
Giesen, Josef H.
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Sponsored by:
Flash of Genius
Publication Date:
06/14/1949
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Assignee:
Giesen, Josef H.
Primary Class:
434/274
Other Classes:
623/61, 623/54, 623/57, 623/33, 623/59, 623/39
International Classes:
G09B23/32
;
G09B23/00
US Patent References:
0088432
0760943
0983547
1494872
Educational device
2108229
Anatomical skeleton
Foreign References:
AT92522B
DE584903C