Title:
Mechanical skeleton
Document Type and Number:
United States Patent 2472819
Inventors:
Giesen, Josef H.
Plaque It!
Sponsored by: Flash of Genius |
Publication Date:
06/14/1949
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Export Citation:
Assignee:
Giesen, Josef H.
Primary Class:
Other Classes:
623/61, 623/54, 623/57, 623/33, 623/59, 623/39
International Classes:
G09B23/32; G09B23/00
Foreign References:
| AT92522B | ||||
| DE584903C |