Stephen W. Bartholomew

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Granby, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Initiator for a transmission tube
- Patent number 5,012,741
- Issue date May 7, 1991
- The Ensign-Bickford Company
- Richard J. Peebles
- C06 - EXPLOSIVES MATCHES
Information Patent Grant
Blasting signal transmission tube connector
- Patent number 4,771,694
- Issue date Sep 20, 1988
- The Ensign-Bickford Company
- Stephen W. Bartholomew
- C06 - EXPLOSIVES MATCHES
Information Patent Grant
Blasting signal transmission tube delay unit
- Patent number 4,742,773
- Issue date May 10, 1988
- The Ensign-Bickford Company
- Stephen W. Bartholomew
- C06 - EXPLOSIVES MATCHES
Information Patent Grant
Combination blasting signal transmission tube connector and delay a...
- Patent number 4,730,560
- Issue date Mar 15, 1988
- The Ensign-Bickford Company
- Stephen W. Bartholomew
- C06 - EXPLOSIVES MATCHES
Information Patent Grant
Detonating cord connector
- Patent number 4,716,831
- Issue date Jan 5, 1988
- The Ensign-Bickford Company
- Stephen W. Bartholomew
- F42 - AMMUNITION BLASTING