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Frederick Howett
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Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes
(AREA)
Abstract
20,421. Howett, F., [trading as Patent Artistic Stone Co.]. Sept. 22. Preservative compositions.-Artificial-stone slabs and other articles formed from cement and refusedestructor ashes and clinkers are hardeued and improved by treating them with a solution consisting of 1 part of calcium chloride, 12 parts of soda or potash, or both together, and 25 to 50 parts of water.
GB190320421D1903-09-221903-09-22Improvements in or relating to the Manufacture of Artificial Stone.
ExpiredGB190320421A
(en)