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Patents for Albert T. Lehman
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
977,060Nov. 29, 1910F. WelkerGrinding-machinecutter grinding
1,028,923Jun. 11, 1912F. WelkerSelf-adjusting clamp-bar for door and furniture clampsclamps
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