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Improvements in or relating to Hearthstone and the like.
Improvements in or relating to Hearthstone and the like.
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机译:炉石传说之类或与之相关的改进。
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9871. Stanway, J. G. Oct. 22. Hcarthstones. - A hearthstone is formed of ground plaster-of-paris moulds, white sand, portland cement, and hydraulic lime.
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