Weather resistant structure and method of making

Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...

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256 19, 256 59, 427297, 427277, 427358, 427398R, 428332, 428537, 428339, 428514, B32B 2104, D06N 704

Patent

active

041817648

ABSTRACT:
A rail comprising, an elongated wooden core, a weather and abrasion resistant protective coating surrounding the core in contact relation therewith, and a plurality of one-way valve like perforations in the coating for releasing vapor from the core through the coating and substantially preventing the passage of water through the coating toward the core, and the method of manufacture thereof.

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patent: 3402086 (1968-09-01), Smith et al.
patent: 3808030 (1974-04-01), Bell
patent: 3914463 (1975-10-01), Mercurio
patent: 3967024 (1976-06-01), Beath et al.
patent: 4004774 (1977-01-01), Houston

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