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公开(公告)号：US1458812A
公开(公告)日：1923-06-12
申请号：US51428921
申请日：1921-11-10
Applicant: FOSTER MERRIAM AND COMPANY
Inventor： FAY EDWARD F
IPC: B60B33/00
CPC classification number: B60B33/0002 , Y10T16/201
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