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Robert Francis Wood-Smith
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6872. Smith, R. F. Wood-. March 31. Drawings to Specification. Insulating - compositions. - The dielectrics of ozonizers and similar apparatus for the electrical treatment of gases are moulded from a mixture of. mica and shellac.
GB190506872D1905-03-311905-03-31Improvements in Ozonizers and like Apparatus for Treating Gases Electrically
ExpiredGB190506872A
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