Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1981-11-10
1984-07-03
Machado, R. P.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182179, 182184, 182200, E04G 136, E06C 744
Patent
active
044573979
ABSTRACT:
This invention relates to new and useful improvements in a platform for stairs, and the principal object of the invention is to provide a device which may be effectively employed as a scaffold structure for stairs, or a step-up platform to reach portions of the ceiling and the walls of a room.
REFERENCES:
patent: 1057722 (1913-04-01), Goetz
patent: 1325423 (1919-12-01), Stuart
patent: 1474250 (1923-11-01), Folliard
patent: 2044703 (1936-06-01), Kline
patent: 2556611 (1951-06-01), Borgman
patent: 3554318 (1971-01-01), Knight
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