-
公开(公告)号:US1835963A
公开(公告)日:1931-12-08
申请号:US27507728
申请日:1928-05-04
Applicant: COMMERCIAL SOLVENTS CORP
Inventor: NEVIUS WALTER I
公开(公告)号:US1835963A
公开(公告)日:1931-12-08
申请号:US27507728
申请日:1928-05-04
Applicant: COMMERCIAL SOLVENTS CORP
Inventor: NEVIUS WALTER I