Fire escape – ladder – or scaffold – Pole or strand grasping-type climber – Alternate grasping
Patent
1979-04-18
1981-01-13
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
Alternate grasping
182187, A45F 326, A47C 910
Patent
active
042444454
ABSTRACT:
An apparatus is provided for use on substantially vertical poles comprising two sections which cooperate in ascending and descending said vertical poles, comprising
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patent: 3338332 (1967-08-01), Brantly
patent: 3460649 (1969-08-01), Baker
patent: 3960240 (1976-06-01), Cotton
patent: 4168765 (1979-09-01), Ferguson
Machado Reinaldo P.
Schupbach, Jr. Cortlan R.
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