Previously Known As
Corporate Name
O'BRIEN KELTERBORN ENGINEERING INC.
From 22 February 1983 (Tuesday)
To 2 June 1988 (Thursday)
Corporate Name
O'BRIEN ENGINEERING INC.
From 19 March 1984 (Monday)
To Present
Corporate Name
OBK ENGINEERING INC.
From 2 June 1988 (Thursday)
To Present