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US 2,990,547 A
Filed
: 07/28/1959
Issued
: 06/27/1961
Est. Priority Date
: 07/28/1959
Status: Expired due to Term
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Current Assignee
James R. Mcdougal
Original Assignee
James R. Mcdougal
Inventors
Mcdougal, James R.
Application Number
US03/830,081
Time in Patent Office
700 Days
Field of Search
US Class Current
343/767
CPC Class Codes
H01Q 13/18
the slot being backed by, o...
H01Q 25/001
Crossed polarisation dual a...
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