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公开(公告)号：US2550822A
公开(公告)日：1951-05-01
申请号：US71177346
申请日：1946-11-22
Applicant: NIKOLAI ALFSEN , ANDREA GUNDERSON , KASPAR KRUSE KIELLAND , ARIRD RUTHS
Inventor： KRUSE KIELLAND KASPAR
IPC: F01K3/00
CPC classification number: F01K3/004
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