Thomas A.M. Hallett

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Edmonton, CA

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Patents Applicationslast 30 patents

Information Patent Application
Threaded connection for drill pipes
- Publication number 20060071474
- Publication date Apr 6, 2006
- Argus Machine Co., Ltd.
- Thomas A.M. Hallett
- E21 - EARTH DRILLING MINING
Information Patent Application
Pigging ball valve
- Publication number 20040099835
- Publication date May 27, 2004
- Thomas A.M. Hallett
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...