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Composite structural panel
US 3,020,986 A
Filed
: 08/18/1958
Issued
: 02/13/1962
Est. Priority Date
: 08/18/1958
Status: Expired due to Term
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Current Assignee
Donald R. Kirk
,
Larz M. Smith
Original Assignee
Donald R. Kirk
,
Larz M. Smith
Inventors
Kirk, Donald R.
,
Smith, Larz M.
Application Number
US03/755,505
Time in Patent Office
1,275 Days
Field of Search
US Class Current
52/793.1
CPC Class Codes
B64C 3/00
Wings ornithopter wings B64...
Y10T 29/49879
Spaced wall tube or receptacle
Y10T 428/24149
Honeycomb-like
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