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公开(公告)号：US2259455A
公开(公告)日：1941-10-21
申请号：US26423239
申请日：1939-03-25
Applicant: GOTTFRIED CARO , ALFRED RIECHE , KREIS BITTERFELD , WALTER RUDOLPH , HANS WASSENEGGER
Inventor： GOTTFRIED CARO , ALFRED RIECHE , KREIS BITTERFELD , WALTER RUDOLPH , HANS WASSENEGGER
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