RS

Robert H. Spensley

Overall (All Time): #1,065,886 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4558781 Cartridge for use in anchor bolting John M. Murphy, John Ellis 1985-12-17
4455171 Reactivatable set-inhibited cementitious compositions John Ellis 1984-06-19
4399911 Cartridge for use in anchor bolting John M. Murphy, John Ellis 1983-08-23
4395162 Cartridge for use in anchor bolting John M. Murphy, John Ellis 1983-07-26
4338048 Cartridge for rock-bolting John M. Murphy 1982-07-06