10401850
Joseph Sloper, English inventor, 1873.
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10401850
Joseph Sloper, English inventor, 1873.
10656798
Illustration shows a Hand Roll Perforator, a Treadle Paging Machine, A Hand Lever Paging Machine, A Hand Lever Perforating Machine, A Treadle Perforating Machine and a Hand Lever Paging Machine
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10656798
Illustration shows a Hand Roll Perforator, a Treadle Paging Machine, A Hand Lever Paging Machine, A Hand Lever Perforating Machine, A Treadle Perforating Machine and a Hand Lever Paging Machine
  

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