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Patent number:
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Patents for H. C. Schroeder
Patents 1 - 2 of 2
Picture
Number
Date
Patentee
Title
959,653
May 31, 1910
E.E. Townsend
Valve-seat grinder
996,435
Jun. 27, 1911
E.E. Townsend
Valve-grinder
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