Inventor
EWICK DAVID W
US5 patents
Patents
5 patentsUS5929368AJul 27, 1999
Hybrid electronic detonator delay circuit assembly
ENSIGN BICKFORD CO62 citations94
US5889228AMar 30, 1999
Detonator with loosely packed ignition charge and method of assembly
ENSIGN BICKFORD CO46 citations94
US5714712AFeb 3, 1998
Explosive initiation system
ENSIGN BICKFORD CO78 citations92
US6408759B1Jun 25, 2002
Initiator with loosely packed ignition charge and method of assembly
ENSIGN BICKFORD CO41 citations90
US5831203ANov 3, 1998
High impedance semiconductor bridge detonator
ENSIGN BICKFORD CO45 citations90