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Patents for Hamlet S. Briggs
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
RE9,468	Nov. 16, 1880	W. Gleason	Machine for Cutting the Teeth of Metal Gears	gear making machines
RE9,469	Nov. 16, 1880	W. Gleason	Machine for Cutting Teeth of Wooden Gears	specialty woodworking machines

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