Robert Bates
Instrument to cure stammering
Read MoreScott - on behalf of the City of Philadelphia
George E. Marks
Artificial Limbs
Read MoreAmasa A. Marks
Artificial Limbs
Read MoreWilliam Anderson
Water purification system
Read MoreHarold N. Anderson
Gear Rolling Machines
Read MoreAmerican Cotton Company
Round Lap Bale System.
Read MoreThomas R. Almond
Flexible Tube
Read MoreThomas R. Almond
Angular coupling
Read MoreHarley Cilfford Alger
Development of liquid pressure measurer
Read MoreAlbert J. Bates
Corliss engine
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