JH

John Humpherson

SP Samuel Heath & Sons Plc: 1 patents #5 of 7Top 75%
📍 Loughborough, GB: #182 of 330 inventorsTop 60%
Overall (All Time): #3,673,583 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5706551 Door closers and dampers primarily for door closers Roger Henry Jeynes 1998-01-13