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Blind landing system
US 2,644,155 A
Filed
: 11/21/1945
Issued
: 06/30/1953
Est. Priority Date
: 11/21/1945
Status: Expired due to Term
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Current Assignee
Robert A. Emmett Jr
Original Assignee
Robert A. Emmett Jr
Inventors
Emmett, Robert A. Jr.
Application Number
US02/630,115
Time in Patent Office
2,778 Days
Field of Search
US Class Current
342/33
CPC Class Codes
G01S 1/02
using radio waves G01S19/00...
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