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Oral inflation valve
US 2,502,301 A
Filed
: 09/20/1945
Issued
: 03/28/1950
Est. Priority Date
: 09/20/1945
Status: Expired due to Term
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Current Assignee
Sterling W. Alderfer
Original Assignee
Sterling W. Alderfer
Inventors
Alderfer, Sterling W.
Application Number
US02/617,502
Time in Patent Office
1,650 Days
Field of Search
US Class Current
137/223
CPC Class Codes
B63C 9/24
Arrangements of inflating v...
Y10T 137/3584
Inflatable article [e.g., t...
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