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Ear plugs
US 3,047,089 A
Filed
: 08/31/1959
Issued
: 07/31/1962
Est. Priority Date
: 08/31/1959
Status: Expired due to Term
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Current Assignee
Jozef J. Zwislocki
Original Assignee
Jozef J. Zwislocki
Inventors
Zwislocki, Jozef J.
Application Number
US03/837,058
Time in Patent Office
1,065 Days
Field of Search
US Class Current
181/135
CPC Class Codes
A61F 11/08
internal, e.g. earplugs
H04R 25/652
Ear tips; Ear moulds hybrid...
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