A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A ladder attachment device having support frames to which a ladder rung-like standing platform is attached, The support frames are configured to mount onto adjacent ladder rungs, rendering the standing platform vertically midway between them.
A ladder attachment device having support frames to which a ladder rung-like standing platform is attached, The support frames are configured to mount onto adjacent ladder rungs, rendering the standing platform vertically midway between them.
Mid-step ladder attachment
KNAPP MICHAEL (author)
2017-10-19
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern