Locks configured to deter cylinder removal

FRYDRYCH ROBERT | European Patent Office | 2020

SYSTEM TO DETER EXTERNAL CLIMBING OF OPEN STAIRS

MURPHY RICHARD B / MURPHY BARBARA H | European Patent Office | 2018

System to deter external climbing of open stairs

MURPHY RICHARD B / MURPHY BARBARA H | European Patent Office | 2018

System To Deter External Climbing of Open Stairs

MURPHY RICHARD B / MURPHY BARBARA H | European Patent Office | 2018

SYSTEM TO DETER EXTERNAL CLIMBING OF OPEN STAIRS

MURPHY RICHARD B / MURPHY BARBARA H | European Patent Office | 2015