Daniel Coenraad Pretorius

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Fochville, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Shaft enlargement arrangement for a boring system
- Patent number 10,947,845
- Issue date Mar 16, 2021
- MASTER SINKERS (PTY) LTD
- Barend Jacobus Jordaan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Shaft enlargement arrangement for a boring system
- Patent number 10,697,246
- Issue date Jun 30, 2020
- MASTER DRILLING SOUTH AFRICA (PTY) LTD.
- Nikolaus Kleuters
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SHAFT ENLARGEMENT ARRANGEMENT FOR A BORING SYSTEM
- Publication number 20200018163
- Publication date Jan 16, 2020
- MASTER SINKERS (PTY) LTD
- Barend Jacobus Jordaan
- E21 - EARTH DRILLING MINING
Information Patent Application
SHAFT ENLARGEMENT ARRANGEMENT FOR A BORING SYSTEM
- Publication number 20180010392
- Publication date Jan 11, 2018
- Masters Sinkers (PTY) Ltd.
- Nikolaus Kleuters
- E21 - EARTH DRILLING MINING