Andrew Boychuk

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Cardiff, AU

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Patents Grantslast 30 patents

Information Patent Grant
Rock bolt
- Patent number 7,338,234
- Issue date Mar 4, 2008
- Dywidag-Systems International Pty Limited
- Mieczyslaw Stanislaw Rataj
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Rock bolt
- Publication number 20060153645
- Publication date Jul 13, 2006
- DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
- Mieczyslaw S. Rataj
- E21 - EARTH DRILLING MINING