GRAHAM, Presiding Judge.
On June 5, 1928, patent No. 16,985, a reissue of patent No. 1,654,759, originally filed June 12, 1926, was issued by the United States Patent Office. This reissue patent was issued on an application of the appellant filed February 25, 1928, and is upon certain improvements in steam heating systems.
The appellee filed his application on October 18, 1923, for a patent upon a similar invention. On July 17, 1928, an interference was declared...
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