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Cartridge
US 2,918,868 A
Filed
: 04/17/1956
Issued
: 12/29/1959
Est. Priority Date
: 04/30/1955
Status: Expired due to Term
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Current Assignee
Lars Ringdal
Original Assignee
Lars Ringdal
Inventors
LARS RINGDAL
Application Number
US03/578,778
Time in Patent Office
1,351 Days
Field of Search
US Class Current
102/530
CPC Class Codes
F42B 8/04
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