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Universal aviators oxygen breathing mask
US 2,837,090 A
Filed
: 07/06/1955
Issued
: 06/03/1958
Est. Priority Date
: 07/06/1955
Status: Expired due to Term
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Current Assignee
Aaron Bloom
,
Edward L. Michel
Original Assignee
Aaron Bloom
,
Edward L. Michel
Inventors
Bloom, Aaron
,
Michel, Edward L.
Application Number
US03/520,388
Time in Patent Office
1,063 Days
Field of Search
US Class Current
128/206.24
CPC Class Codes
A62B 18/025
Halfmasks A62B23/02 takes p...
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