Inventor
HOWARD CURTISS G
US4 patents
Patents
4 patentsUS4239954ADec 16, 1980
Backer for electron beam hole drilling
UNITED TECHNOLOGIES CORP38 citations89
US4156807AMay 29, 1979
Method for preventing burr formation during electron beam drilling
UNITED TECHNOLOGIES CORP31 citations89
US4484058ANov 20, 1984
Electron beam hole drilling apparatus
UNITED TECHNOLOGIES CORP4 citations58
US4470945ASep 11, 1984
Method and apparatus for applying an electron beam drilling backer to a metal sheet
UNITED TECHNOLOGIES CORP5 citations58