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公开(公告)号:US2455210A
公开(公告)日:1948-11-30
申请号:US79350047
申请日:1947-12-23
Applicant: ANDERSON JOSEPH B
Inventor: ANDERSON JOSEPH B
IPC: G08B1/00
CPC classification number: G08B1/00
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公开(公告)号:US1917481A
公开(公告)日:1933-07-11
申请号:US59092032
申请日:1932-02-04
Applicant: JOSEPH ANDERSON , ANDERSON LEO V , ANDERSON JOSEPH B
Inventor: JOSEPH ANDERSON , ANDERSON LEO V , ANDERSON JOSEPH B
IPC: G04C23/20
CPC classification number: G04C23/20
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公开(公告)号:US1884500A
公开(公告)日:1932-10-25
申请号:US56786731
申请日:1931-10-09
Applicant: ANDERSON JOSEPH B
Inventor: ANDERSON JOSEPH B
IPC: G09B29/10
CPC classification number: G09B29/102
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公开(公告)号:US2455209A
公开(公告)日:1948-11-30
申请号:US75061747
申请日:1947-05-26
Applicant: ANDERSON JOSEPH B
Inventor: ANDERSON JOSEPH B
IPC: G08B1/00
CPC classification number: G08B1/00
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