Inventor
BARTNICKI FREDERICK J
US13 patents
⚠️ This page may combine multiple inventors who share the name “BARTNICKI FREDERICK J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WERNER CO
7 patentsUSD422717SApr 11, 2000
Ladder top
WERNER CO49 citations94
US5573081ANov 12, 1996
Ladder top with bail recess
WERNER CO67 citations93
US5791439AAug 11, 1998
Ladder, member for connecting a rail to a horizontal element of a ladder, and method, and apparatus and method for holding a washer
WERNER CO17 citations90
US5358070AOct 25, 1994
Ladder top
WERNER CO46 citations90
US5636706AJun 10, 1997
Ladder, member for connecting a rail to a horizontal element of a ladder, and method
WERNER CO14 citations80
US6142255ANov 7, 2000
Ladder, member for connecting a rail to a horizontal element of a ladder, and method
WERNER CO5 citations72
USD413990SSep 14, 1999
Front face of a ladder top
WERNER CO15 citations72
WERNER CO INC R D
6 patentsUS5366051ANov 22, 1994
Hollow plastic ladder
WERNER CO INC R D23 citations92
US5067589ANov 26, 1991
Extendable support
WERNER CO INC R D37 citations92
US5259480ANov 9, 1993
Ladder top
WERNER CO INC R D48 citations90
USD340773SOct 26, 1993
Ladder top
WERNER CO INC R D39 citations90
USD340291SOct 12, 1993
Ladder pail shelf
WERNER CO INC R D9 citations73
US5131495AJul 21, 1992
Hollow plastic ladder
WERNER CO INC R D14 citations73