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Annular wing aircraft
US 2,952,422 A
Filed
: 08/03/1955
Issued
: 09/13/1960
Est. Priority Date
: 08/03/1955
Status: Expired due to Term
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24 Citations
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Current Assignee
Charles J. Fletcher
,
Raymond A. Fletcher
Original Assignee
Charles J. Fletcher
,
Raymond A. Fletcher
Inventors
Fletcher, Charles J.
,
Fletcher, Raymond A.
Application Number
US03/526,144
Time in Patent Office
1,868 Days
Field of Search
US Class Current
244/12.2
CPC Class Codes
B64C 29/02
having its flight direction...
B64C 39/062
having annular wings
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