Inventor
BARTHOLOMEW STEPHEN W
US11 patents
⚠️ This page may combine multiple inventors who share the name “BARTHOLOMEW STEPHEN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ENSIGN BICKFORD CO
5 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
US5012741AMay 7, 1991
Initiator for a transmission tube
ENSIGN BICKFORD CO29 citations88
US4716831AJan 5, 1988
Detonating cord connector
ENSIGN BICKFORD CO11 citations71
SHOCK TUBE SYSTEMS INC
3 patentsUS6272996B1Aug 14, 2001
In-line initiator and firing device assembly
SHOCK TUBE SYSTEMS INC63 citations94
US7086335B2Aug 8, 2006
Redundant signal transmission system and deployment means
SHOCK TUBE SYSTEMS INC11 citations79
US7162957B2Jan 16, 2007
Redundant signal transmission system and development method
SHOCK TUBE SYSTEMS INC3 citations57