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公开(公告)号：US968211A
公开(公告)日：1910-08-23
申请号：US1903160387
申请日：1903-06-06
Applicant: VROOMAN EDWIN E
Inventor： VROOMAN EDWIN E
CPC classification number: B65G2201/04
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公开(公告)号：US909833A
公开(公告)日：1909-01-12
申请号：US909833D
Applicant: JOHN J RIDGWAY , EDWARD G THOMAS , VROOMAN EDWIN E
Inventor： VROOMAN EDWIN E
CPC classification number: B65G39/145
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