Inventor

HARTWIGSEN WESLEY D

US2 patents

⚠️ This page may combine multiple inventors who share the name “HARTWIGSEN WESLEY D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHELL MINING COMPANY

1 patent

US4764221AAug 16, 1988

Silo cleaning process

SHELL MINING COMPANY7 citations68

HARTWIGSEN WESLEY D

1 patent

US4942982AJul 24, 1990

Silo cleaning apparatus

HARTWIGSEN WESLEY D14 citations65