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公开(公告)号：US1615384A
公开(公告)日：1927-01-25
申请号：US47172421
申请日：1921-05-23
Applicant: STANDARD DEV CO
Inventor： HOWARD FRANK A , CLARK EDGAR M , CARRINGER JAMES R
CPC classification number: C10G9/08
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公开(公告)号：US1478102A
公开(公告)日：1923-12-18
申请号：US34730819
申请日：1919-12-26
Applicant: STANDARD DEV CO
Inventor： CLARK EDGAR M , LOOMIS NATHANIEL E , CARRINGER JAMES R
CPC classification number: C10G9/14
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