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Robert B. Logan
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Edmonton, CA
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Patents Grants
last 30 patents
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Patent Grant
Method of preventing hydrogen darkening of optic fibre
Patent number
7,561,776
Issue date
Jul 14, 2009
Petrospec Engineering Ltd.
Gerald V Chalifoux
G02 - OPTICS
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Patent Grant
Braided thermocouple cable bundle
Patent number
7,290,601
Issue date
Nov 6, 2007
Petrospec Engineering Ltd.
Gerald V Chalifoux
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
Method of preventing hydrogen darkening of optic fibre
Publication number
20070122104
Publication date
May 31, 2007
Petrospec Engineering Ltd.
Gerald V. Chalifoux
E21 - EARTH DRILLING MINING
Information
Patent Application
Braided thermocouple cable bundle
Publication number
20060115221
Publication date
Jun 1, 2006
Petrospec Engineering Ltd.
Gerald V. Chalifoux
E21 - EARTH DRILLING MINING