Henri VISSER

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Johannesburg, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Adapted grout delivery sleeve
- Patent number 11,215,053
- Issue date Jan 4, 2022
- NCM INNOVATIONS (PTY) LTD
- Martin Cawood
- E21 - EARTH DRILLING MINING
Information Patent Grant
Adapted rock bolt with improved installation properties
- Patent number 10,858,937
- Issue date Dec 8, 2020
- EPIROC DRILLING TOOLS AB
- Brendan Robert Crompton
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ADAPTED GROUT DELIVERY SLEEVE
- Publication number 20210071525
- Publication date Mar 11, 2021
- NCM INNOVATIONS (PTY) LTD
- Martin CAWOOD
- E21 - EARTH DRILLING MINING
Information Patent Application
ADAPTED ROCK BOLT WITH IMPROVED INSTALLATION PROPERTIES
- Publication number 20200157939
- Publication date May 21, 2020
- EPIROC HOLDINGS SOUTH AFRICA (PTY) LTD
- Brendan Robert CROMPTON
- E21 - EARTH DRILLING MINING