Inventor
CHEPURNOI NIKOLAI P
SU8 patents
⚠️ This page may combine multiple inventors who share the name “CHEPURNOI NIKOLAI P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INST GORNOGO DELA SIBIRSKOGO O
7 patentsUS4708211ANov 24, 1987
Reversible air-operated percussive action machine for driving holes in the ground
INST GORNOGO DELA SIBIRSKOGO O18 citations71
US4570723AFeb 18, 1986
Machine for driving holes in the ground
INST GORNOGO DELA SIBIRSKOGO O11 citations70
US4629008ADec 16, 1986
Reversible percussive action machine
INST GORNOGO DELA SIBIRSKOGO O6 citations59
US4606414AAug 19, 1986
Percussive air tool
INST GORNOGO DELA SIBIRSKOGO O2 citations51
US4174758ANov 20, 1979
Percussive action pneumatic device for drilling holes in soil
INST GORNOGO DELA SIBIRSKOGO O0 citations49
US4398609AAug 16, 1983
Apparatus for sinking wells in the ground
INST GORNOGO DELA SIBIRSKOGO O0 citations47
US4440240AApr 3, 1984
Method of making holes in the soil and apparatus for performing this method
INST GORNOGO DELA SIBIRSKOGO O0 citations41