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Primary view of Current Regulator for Dynamo Electric Machines.
Crowdus, Walter A. & Sutton, Henry M.
February 14, 1888
Primary view of Book Adjuster.
Adair, Irvine James
February 8, 1887
Primary view of Well Digging Machine.
Chambers, Job C. & Chambers, Silas
February 6, 1883
Primary view of Recording Ballot-Box.
Buck, James G. H.
February 10, 1880
Primary view of Electrical Fare-Box.
Crowdus, Walter A.
February 8, 1887
Primary view of Power Stand.
Hetherington, Johnathan S.
February 2, 1886
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