A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A ladder is disclosed having a six point base for improved stability and user center of gravity.
A ladder is disclosed having a six point base for improved stability and user center of gravity.
SAFETY LADDER
ROGALSKI LAWRENCE DARRELL (author)
2021-12-23
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern