Brian Peter Lewis

Follow

Person

Roodepoort, ZA

People

Patents Grantslast 30 patents

Information Patent Grant
Mine props
- Patent number 5,868,527
- Issue date Feb 9, 1999
- HL & H Timber Products (Proprietary) Limited
- Richard George King
- E21 - EARTH DRILLING MINING
Information Patent Grant
Prop headboard
- Patent number 5,658,099
- Issue date Aug 19, 1997
- HL & H Timber Products (Propreitary) Limited
- Frans Roelof Petrus Pienaar
- E21 - EARTH DRILLING MINING
Information Patent Grant
Yieldable load support
- Patent number 5,318,387
- Issue date Jun 7, 1994
- H L & H Timber Products (Proprietary) Limited
- Frans R. P. Pienaar
- E21 - EARTH DRILLING MINING
Information Patent Grant
Prop preloading apparatus
- Patent number 5,149,228
- Issue date Sep 22, 1992
- HL&H Timber Products (Proprietary) Limited
- Frans R. P. Pienaar
- E21 - EARTH DRILLING MINING