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US 2,498,960 A
Filed
: 09/15/1945
Issued
: 02/28/1950
Est. Priority Date
: 09/15/1945
Status: Expired due to Term
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Current Assignee
Clayton D. Mullin
Original Assignee
Clayton D. Mullin
Inventors
Mullin, Clayton D.
Application Number
US02/616,609
Time in Patent Office
1,627 Days
Field of Search
US Class Current
381/338
CPC Class Codes
A61B 7/02
Stethoscopes acoustic detai...
H04R 1/1016
Earpieces of the intra-aura...
H04R 5/0335
Earpiece support, e.g. head...
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