The present invention increases real estate by providing non-annular lands which do not completely encircle the through holes. The non-annular lands are non-annular, that is they do not extend 360 DEG around the through hole. Preferably the non-annular lands contact no more than one side of the through holes thereby providing real estate not otherwise available using conventional lands. The present invention also relates to a method for producing such Non-annular lands.
申请公布号
US5713127(A)
申请公布日期
1998.02.03
申请号
US19950488259
申请日期
1995.06.07
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CHOBOT, IVAN IVOR;MARTONE, ROBERT ANTHONY;YOUNGS, JR., THURSTON BRYCE