Inventor
PARKES DONALD H
US7 patents
⚠️ This page may combine multiple inventors who share the name “PARKES DONALD H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHIVVERS INC
6 patentsUS5131483AJul 21, 1992
Single lever control
SHIVVERS INC108 citations94
US4750273AJun 14, 1988
Computer controlled grain drying
SHIVVERS INC70 citations94
US4599809AJul 15, 1986
Grain dryer system
SHIVVERS INC74 citations94
US5279376AJan 18, 1994
Force neutralizing mechanism for a single lever control
SHIVVERS INC52 citations93
US5778648AJul 14, 1998
Lawn mower clipping collection system
SHIVVERS INC49 citations91
US5784867AJul 28, 1998
Variable force traction enhance systems
SHIVVERS INC13 citations71