Patent soliciting and United States court practice, with remarks concerning specifications and claims, drawings, official examination, appeals, reissues, searches and reports, court practice, interferences, foreign patents, etc (1883)
Howson & Howson. [from old catalog] · [Philadelphia, Press of Times printing house] · leaf 148
PHILADELPHIA BURRING MACHINE COMPANY.WOOL-WASHER. N •^ ^
Patents
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