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US 3,400,222 A
Filed
: 04/23/1963
Issued
: 09/03/1968
Est. Priority Date
: 04/23/1963
Status: Expired due to Term
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23 Citations
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Current Assignee
John C. Sieglinger
,
John G. Nightingale
,
John M. Repholz
,
Stanley Zak
Original Assignee
John C. Sieglinger
,
John G. Nightingale
,
John M. Repholz
,
Stanley Zak
Inventors
Nightingale, John G.
,
Repholz, John M.
,
Sieglinger, John C.
,
Zak, Stanley
Application Number
US04/275,008
Time in Patent Office
1,960 Days
Field of Search
US Class Current
379/120
CPC Class Codes
H04M 15/04
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