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Respirator devices for administering oxygen or other gaseous agents
US 2,970,594 A
Filed
: 04/25/1958
Issued
: 02/07/1961
Est. Priority Date
: 04/25/1958
Status: Expired due to Term
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Current Assignee
James C. Doak
Original Assignee
James C. Doak
Inventors
Doak, James C.
Application Number
US03/730,905
Time in Patent Office
1,019 Days
Field of Search
US Class Current
128/205.21
CPC Class Codes
A62B 7/10
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