Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1988-08-29
1989-05-30
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108152, A45F 326, A47C 910
Patent
active
048342173
ABSTRACT:
A tree stand comprising adjustable tree gripping and feet supporting means is also provided with spring actuated locking means for facilitating the adjustment of the tree gripping and feet supporting sections without the need for wrenches or other tools.
REFERENCES:
patent: 3509966 (1970-05-01), Sarno
patent: 4130180 (1978-12-01), Ferguson
patent: 4230203 (1980-10-01), Sweat
patent: 4331216 (1982-05-01), Amacker
patent: 4337844 (1982-07-01), Hice
patent: 4428459 (1984-01-01), Peck
patent: 4458782 (1984-07-01), Meyer
patent: 4597473 (1986-07-01), Peck
Machado Reinaldo P.
Shelley Prentiss
LandOfFree
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