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Electron tube variable impulse communication system
US 2,451,859 A
Filed
: 02/25/1943
Issued
: 10/19/1948
Est. Priority Date
: 02/25/1943
Status: Expired due to Term
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Current Assignee
Francis X. Bucher
,
Robert E. Mumma
Original Assignee
Francis X. Bucher
,
Robert E. Mumma
Inventors
Mumma, Robert E.
,
Bucher, Francis X.
Application Number
US02/477,096
Time in Patent Office
2,063 Days
Field of Search
US Class Current
340/12.15
CPC Class Codes
H04L 19/00
Apparatus or local circuits...
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