United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 979
m and car-rying a pivot pin which has on one side of thelever a bearing in which it can turn, and onthe other side of the lever a conical endresting upon a supporting bearing, substan- 85tially as specified. In testimony whereof, I have signed myname to this specification, in the presence oftwo…
Phonograph · Patents
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