Extensible step assembly

Details Extensible step assembly Extensible step assembly

1977-05-13

1978-03-21

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

Slidable nested single rung units

182 91, 182 97, 280166, B60R 302

Patent

active

040798151

ABSTRACT:
An extensible step assembly having steps secured to sections of extensible or telescoping arms whereby the assembly can be moved from a retracted compact position to an extended position for use.

REFERENCES:
patent: 988593 (1911-04-01), Poss
patent: 1195869 (1916-08-01), Taylor
patent: 2611466 (1952-09-01), Biggert
patent: 3774720 (1973-11-01), Hovey
patent: 4021071 (1977-05-01), Norman

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