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公开(公告)号：US2467660A
公开(公告)日：1949-04-19
申请号：US55479444
申请日：1944-09-19
Applicant: LEO COUGHLIN
Inventor： LEO COUGHLIN
IPC: A24F15/18
CPC classification number: A24F15/18
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公开(公告)号：US2646783A
公开(公告)日：1953-07-28
申请号：US16706450
申请日：1950-06-09
Applicant: LEO COUGHLIN
Inventor： LEO COUGHLIN
IPC: H01T13/18
CPC classification number: H01T13/18
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