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US 2,985,978 A
Filed
: 12/24/1956
Issued
: 05/30/1961
Est. Priority Date
: 12/24/1956
Status: Expired due to Term
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49
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Current Assignee
Dennis W. Hansen
,
Engelbert J. Peham
,
Leonard G. Breen
Original Assignee
Dennis W. Hansen
,
Engelbert J. Peham
,
Leonard G. Breen
Inventors
Breen, Leonard G.
,
Hansen, Dennis W.
,
Peham, Engelbert J.
Application Number
US03/630,185
Time in Patent Office
1,618 Days
Field of Search
US Class Current
40/333
CPC Class Codes
G09F 23/00
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