San Francisco : Architect and Engineer, Inc · leaf 103
WIUIAM ARILD JOHNSON. ArcbltMt mflRCH 1955 spiral Stairs … By ARISTON New catalogue Features technical data and illustrations of recent installations . . . occupy minimum area . . . sizes from 4- to8-foot diameters. Welded steel construction withheavy pipe columns and railings assure ade-quate strength, while non-skid checkered steeltreads provide safety.…
Architecture · Building
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