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US3057395A
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Machine for forming plaster keying recesses in plasterboard
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US2712169A
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Machine for severing a ribbon of plasterboard to form plasterboard panels and finishing the ends of the panels
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US2708300A
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Machine for forming plaster keying depressions in plasterboard
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US2633441A
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Method of making perforated composition plasterboard
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US2479207A
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Apparatus for forming plaster-keying depressions in plasterboard
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US2523861A
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Method of finishing end edges of plasterboard
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US2455016A
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Lath board
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US2176327A
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Lath
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US2077513A
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Ribbed board
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US1867727A
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Mechanism for forming lath panels
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US1844144A
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Method of making rib lath
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US1694640A
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Lath board
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US1549292A
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Composition lath board
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US1538087A
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Process of making plaster board
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