Title:
Changeable pattern stencil for use in molding decorative wall facings
United States Patent 2616145

Inventors:
Dufford, Harry M.
Publication Date:
11/04/1952
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Assignee:
Dufford, Harry M.
Primary Class:
Other Classes:
156/71, 52/314, 101/114, 249/157, 101/129, 249/16, 101/128, 264/34
International Classes:
E04F21/04; E04F21/02
US Patent References:
2514805Form for making concrete slabs
2567843Pattern for molding ornamental plastic veneer