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公开(公告)号:US866957A
公开(公告)日:1907-09-24
申请号:US1907357324
申请日:1907-02-14
Applicant: PARSONS JAMES WALKER
Inventor: PARSONS JAMES WALKER
CPC classification number: G01B5/043
公开(公告)号:US866957A
公开(公告)日:1907-09-24
申请号:US1907357324
申请日:1907-02-14
Applicant: PARSONS JAMES WALKER
Inventor: PARSONS JAMES WALKER
CPC classification number: G01B5/043