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1.Process for preparing improved derris and cube extracts and hydrogenated derivatives and products produced thereby 失效
Title translation: 用于制备改进的德里斯和立方体提取物以及由此制备的氢化衍生物和产物的方法公开(公告)号:US2126854A
公开(公告)日:1938-08-16
申请号:US72296834
申请日:1934-04-28
Applicant: DERRIS INC
Inventor: ROBERT WOTHERSPOON
CPC classification number: A01N65/00
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公开(公告)号:US2058200A
公开(公告)日:1936-10-20
申请号:US63279032
申请日:1932-09-12
Applicant: DERRIS INC
Inventor: ROBERT WOTHERSPOON
CPC classification number: A01N65/00
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3.Process for producing water-soluble and water-miscible insecticides and products produced thereby 失效
Title translation: 生产水溶性和水混溶性杀虫剂的方法及由此生产的产品公开(公告)号:US2052374A
公开(公告)日:1936-08-25
申请号:US72296934
申请日:1934-04-28
Applicant: DERRIS INC
Inventor: ROBERT WOTHERSPOON
CPC classification number: A01N65/00 , Y02A50/352
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