Showing 1–11 of 11 inventors

Rank Inventor Primary Company Patents
1 Norman A. Plumpton Coal Industry (Patents) Limited 1
1 Piotr M. Surzyn Coal Industry (Patents) Limited 1
1 Maurice Goodall 1
1 Robert H. Higgs Coal Industry (Patents) Limited 1
1 Jeffrey C. Broadhurst 1
1 David J. Buchanan Coal Industry (Patents) Limited 1
1 Noel R. Wilkinson Robert Morton Dg Limited 1
1 Malcolm G. Tomlin Coal Industry (Patents) Limited 1
1 Francis A. Haskew Coal Industry (Patents) Limited 1
1 Stephen R. Shaw Coal Industry (Patents) Limited 1
1 Gerard M. Croke Coal Industry (Patents) Limited 1