Inventor
ENGEBRETSON HAROLD J
US7 patents
⚠️ This page may combine multiple inventors who share the name “ENGEBRETSON HAROLD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
APPLIED TECH ASS
5 patentsUS4433491AFeb 28, 1984
Azimuth determination for vector sensor tools
APPLIED TECH ASS72 citations93
US4594790AJun 17, 1986
Borehole surveying employing ring laser gyroscope
APPLIED TECH ASS31 citations91
US4472884ASep 25, 1984
Borehole azimuth determination using magnetic field sensor
APPLIED TECH ASS54 citations91
US4593559AJun 10, 1986
Apparatus and method to communicate bidirectional information in a borehole
APPLIED TECH ASS37 citations90
US4559713ADec 24, 1985
Azimuth determination for vector sensor tools
APPLIED TECH ASS34 citations89