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US 2,964,622 A
Filed
: 10/21/1957
Issued
: 12/13/1960
Est. Priority Date
: 10/21/1957
Status: Expired due to Term
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Current Assignee
Philip Fire
Original Assignee
Philip Fire
Inventors
Fire, Philip
Application Number
US03/691,410
Time in Patent Office
1,149 Days
Field of Search
US Class Current
455/302
CPC Class Codes
H03D 7/165
at least two frequency chan...
H03D 7/18
Modifications of frequency-...
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