Patent search ap:("TRIPLEX SAFETY GLASS CO") AND inv:"SPENCER HENRY B" Page 1

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发明授权
Testing toughened glass for internal stresses 失效
Title translation: 测试内部应力的韧化玻璃

公开(公告)号：US3520608A

公开(公告)日：1970-07-14

申请号：US3520608D

申请日：1967-09-12

Applicant: TRIPLEX SAFETY GLASS CO

Inventor： SPENCER HENRY B

IPC: G01B11/16 , G01L1/24 , G01N21/21

CPC classification number: G01B11/18 , G01L1/241 , G01N21/21

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