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US 2,605,558 A
Filed
: 11/14/1950
Issued
: 08/05/1952
Est. Priority Date
: 11/14/1950
Status: Expired due to Term
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Current Assignee
Ernest C. Burkhart
,
Lehner George F J
,
Ralph E. Brown
Original Assignee
Ernest C. Burkhart
,
Lehner George F J
,
Ralph E. Brown
Inventors
LEHNER GEORGE F J
,
Brown, Ralph E.
,
Burkhart, Ernest C.
Application Number
US03/195,632
Time in Patent Office
630 Days
Field of Search
US Class Current
434/183
CPC Class Codes
G09B 17/04
for increasing the rate of ...
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