The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 192
ORK 34-9- 365 SEVENTH ST. SAN FRANCISCO. When writing to Advertis The Architect and Eiii^iiicer EVERY TRIPTESTS THE SAfETYINTERLOCK Every movemtiil otany elevator door teststhe Safety Interlockand positively provesthat it is in workingorder. Devices that aretested only under thestress of…
Architecture · Building
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