Fire escape – ladder – or scaffold – Stackable – Male and female connecting means
Patent
1994-02-22
1995-03-28
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Stackable
Male and female connecting means
52637, E04G 114
Patent
active
054008700
ABSTRACT:
A scaffolding frame system comprising a pair of lower elongated vertical members each having an elongated linking member at the upper end of a vertical member for releasingly attaching the linking member to the upper end, a pair of upper elongated vertical members for releasingly attaching a respective lower end thereof to a linking member in a respective lower elongated vertical member.
REFERENCES:
patent: 793576 (1905-06-01), Follmer
patent: 1042417 (1912-10-01), Erickson
patent: 2473388 (1949-06-01), Rambo
patent: 4891926 (1990-01-01), Allenbaugh
Alinco, Inc.
Chin-Shue Alvin C.
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