Inventor
WALLICK JR CLAUDE R
US9 patents
Patents
9 patentsUS5117943AJun 2, 1992
Rung lock assembly for an extension ladder
EMERSON ELECTRIC CO23 citations91
US4834216AMay 30, 1989
Foldable ladder structure and method of manufacturing the same
EMERSON ELECTRIC CO26 citations91
US4766976AAug 30, 1988
Ladder leg extender and leveler
EMERSON ELECTRIC CO33 citations91
US5429207AJul 4, 1995
Rung lock and latch assembly for an extension ladder
EMERSON ELECTRIC CO36 citations89
USD300365SMar 21, 1989
Step ladder
EMERSON ELECTRIC CO11 citations72
US4959107ASep 25, 1990
Method and apparatus for treating ladder rungs for forming assembly with ladder rails
EMERSON ELECTRIC CO13 citations69
US5005280AApr 9, 1991
Method of manfacturing a foldable ladder structure
EMERSON ELECTRIC CO5 citations61
USD300366SMar 21, 1989
Step ladder back section
EMERSON ELECTRIC CO4 citations61
USD297768SSep 20, 1988
Step ladder section
EMERSON ELECTRIC CO3 citations61