Fire escape pole

Details Fire escape pole Fire escape pole

1985-03-19

1987-12-29

Word, A. Hugo

Building units and construction elements

Stair, ladder, scaffold, or similar support

Stepped

D25100

Patent

active

D02934760

REFERENCES:
patent: D180122 (1957-04-01), Tunstead
patent: D187597 (1960-04-01), Lightfoot et al.
patent: D208630 (1967-09-01), Coblentz
patent: D245925 (1977-09-01), Debes, III
patent: 3315762 (1967-04-01), Torrey
patent: 4257490 (1981-03-01), Bandy

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