GRAHAM, Presiding Judge.
The appellant filed his application in the United States Patent Office for a patent on certain improvements in mercury switches. The Examiner rejected claims 1 to 6, inclusive, 8, 11, and 12, on reference to British patent to Hatfield, 17,286 of 1911, 200 — 152, and Kaisser, 1,517,636, December 2, 1924, 200 — 152. Claims 15, 16, and 17 were added by supplemental appeal. The Board of Appeals held that the decision of the Examiner...
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