Dorothy Foster

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Flameless hot oiler
- Patent number 7,424,916
- Issue date Sep 16, 2008
- Leader Energy Services Ltd.
- Robert Joseph Foster
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Flameless boiler
- Publication number 20060185621
- Publication date Aug 24, 2006
- PD&E Resource Services Corp.
- Robert Joseph Foster
- F22 - STEAM GENERATION
Information Patent Application
Flameless hot oiler
- Publication number 20050039906
- Publication date Feb 24, 2005
- PD&E Resource Services Corp.
- Robert Joseph Foster
- E21 - EARTH DRILLING MINING