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1.
公开(公告)号:US3305267A
公开(公告)日:1967-02-21
申请号:US36884764
申请日:1964-05-20
Applicant: STAMICARBON
Inventor: DOMMELEN IZAAK S VAN
CPC classification number: E21F13/068 , E21C29/00 , E21C29/14
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2.
公开(公告)号:US3297363A
公开(公告)日:1967-01-10
申请号:US29834463
申请日:1963-07-29
Applicant: STAMICARBON
Inventor: HERMES JOHANNES M , DOMMELEN IZAAK S VAN
IPC: E21C35/12
CPC classification number: E21C35/12
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公开(公告)号:US3245722A
公开(公告)日:1966-04-12
申请号:US22127162
申请日:1962-09-04
Applicant: STAMICARBON
Inventor: CREUELS FRANS H , HERMES JOHANNES M , DOMMELEN IZAAK S VAN
CPC classification number: E21F13/066 , E21C35/12
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