US PATENT SUBCLASS 182 / 81
.~.~ Door and ladder on opposite sides of wall
Current as of:
June, 1999
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182 /
HD
FIRE ESCAPE, LADDER, OR SCAFFOLD
77
DF
DOOR AND LADDER
{1}
78
DF
.~ Door operates ladder {2}
81
.~.~ Door and ladder on opposite sides of wall
DEFINITION
Classification: 182/81
(under subclass 78) Device wherein the door and ladder are movably mounted on opposite sides of a common supporting wall (e.g., ceiling).