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Fred C. Ielfield patents

 Collection
Identifier: 1043
Abstract: Fred C. Ielfield (1864-1948) was a mechanical engineer and inventor. This collection consists of twelve patents for mail canceling and postmarking machinery, corn-husking machinery, and a cereal cutter, all invented by Ielfield.
Dates: 1901-1946

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  • Subject: Patents X
  • Subject: Machine-tools X