Skip to main content Skip to search results

Showing Collections: 1 - 1 of 1

Fred C. Ielfield patents

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

Filtered By

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