Title:
HELICOPTER DEVICE
United States Patent 3474987
Inventors:
Meditz, Ludwig F.
Publication Date:
10/28/1969
Export Citation:
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Assignee:
Meditz, Ludwig F.
Primary Class:
244/4R
Other Classes:
244/17.11
International Classes:
B64C39/02; B64C39/00; (IPC1-7): B64C27/00
View Patent Images:
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US Patent References:
3117744Rotary wing alighting devices
Foreign References:
DE673964C
IT556837B




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