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公开(公告)号:US1563919A
公开(公告)日:1925-12-01
申请号:US2409325
申请日:1925-04-18
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
IPC: E01B9/36
CPC classification number: E01B9/36
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公开(公告)号:US1598249A
公开(公告)日:1926-08-31
申请号:US7539925
申请日:1925-12-14
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
IPC: E01B13/02
CPC classification number: E01B13/02 , E01B2201/04
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公开(公告)号:US1179029A
公开(公告)日:1916-04-11
申请号:US2471215
申请日:1915-04-29
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
CPC classification number: E01B9/36
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公开(公告)号:US836135A
公开(公告)日:1906-11-20
申请号:US1906306856
申请日:1906-03-19
Applicant: ROBERT E VEECH , PARSONS LOUIS R
Inventor: PARSONS LOUIS R
CPC classification number: B61L11/02
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公开(公告)号:US1744671A
公开(公告)日:1930-01-21
申请号:US22080627
申请日:1927-09-20
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
IPC: E01B13/02
CPC classification number: E01B13/02 , E01B2201/08
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公开(公告)号:US1744664A
公开(公告)日:1930-01-21
申请号:US35382229
申请日:1929-04-09
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
IPC: E01B13/02
CPC classification number: E01B13/02 , E01B2201/08
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公开(公告)号:US811738A
公开(公告)日:1906-02-06
申请号:US1905271500
申请日:1905-07-27
Applicant: PARSONS LOUIS R
Inventor: PARSONS LOUIS R
CPC classification number: B61L11/02
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