The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 484
otected in some way, many accidents are theresult. __ . , . , The Universal Safety Tread is designed es-pecially to meet these wants. It is essentially anon-slipping tread and remains so until entirelyworn out. It is very durable, and its life, undersuch conditions as school house work, is of… … UNIVERSAL SAFETY TREAD, SHOWING CORRUGATED ANTI-SLIP TREAD 132 The Architect and Engineer
Architecture · Building
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