Inventor

KOOK DONALD D

US3 patents

Patents

3 patents

US6249113B1Jun 19, 2001

Hand held sensor and display

ZIRCON CORP115 citations96

US5313713AMay 24, 1994

Electronic level with display scale and audible tone scale

ZIRCON CORP70 citations94

US5452522ASep 26, 1995

Calibrated bevel square with integrated electronic level and plumb

ZIRCON CORP31 citations90