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US657240A
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Process of treating india-rubber, gutta-percha, and their compositions.
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GB189709464A
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Improvements in the Treatment of India-rubber, Guttapercha, and their Compounds.
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GB189520243A
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A Substitute for India Rubber, Gutta-percha, and Substances of a like Nature, and Process for Manufacturing the same.
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US656191A
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Compound as substitute for caoutchouc, gutta-percha, or the like.
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GB189408648A
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Improvements in Water-proof Fabrics, Garments, Wrappers and Coverings, and in the Process and Composition for Manufacturing the same.
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