Inventor
NECKER WILLIAM J
US4 patents
Patents
4 patentsUS4742773AMay 10, 1988
Blasting signal transmission tube delay unit
ENSIGN BICKFORD CO42 citations90
US4771694ASep 20, 1988
Blasting signal transmission tube connector
ENSIGN BICKFORD CO30 citations89
US4730560AMar 15, 1988
Combination blasting signal transmission tube connector and delay assembly
ENSIGN BICKFORD CO30 citations89
US4716831AJan 5, 1988
Detonating cord connector
ENSIGN BICKFORD CO11 citations71