Title:
HELICOPTER DEVICE
United States Patent 3474987
US Patent References:
Rotary wing alighting devices
- - 3117744


Inventors:
Meditz, Ludwig F.
Publication Date:
10/28/1969
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Assignee:
Meditz, Ludwig F.
Primary Class:
244/4R
Other Classes:
244/17.110
International Classes:
B64C39/02; B64C39/00; B64C27/00
Foreign References:
DE673964C
IT556837B




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