GC

Graham H. Clarke

HL Hl & H Timber Products (Proprietary) Limited: 1 patents #1 of 5Top 20%
📍 Boksburg, ZA: #1 of 3 inventorsTop 35%
Overall (1997): #147,241 of 185,788Top 80%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5669739 Prestressing of mine props — 1997-09-23