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Opinion of Judge Lowell in the Spencer case June 27 1881
Opinion of Judge Blatchford in the Irwin case October 21 1881
Opinion of Judge Wallace in the Drawbaugh case December 5 1884 21
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action alleged American Bell Telephone apparatus appear application argument articulate speech Bell Telephone Company Bell's bill called carrying caused caveat circuit claim closed combination Commissioner complainants connection considered construction contracts corporation counsel court decision defendants described device diaphragm discovery Drawbaugh Edison effect electric evidence Examiner Exhibit experiments fact filed follows further George Brown give given granted Gray Gray's heard improvements infringement instruments interest interference invention inventor involved issue January known machine magnet March matter McDonough means ment method motion never obtained Office Ohio operation opinion original parties patent Patent Office persons practice present principle prior priority proceedings produced proof question reason receiver record reference Reis relation reproduced respect result says shown sounds specification suit talking telegraph testifies testimony tion tones transmitting true United vibrations wire witnesses