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  2 items
  Artifacts

  AIChE slide rule pin

  • American Institute of Chemical Engineers slide rule pin

  • After 1900 – before 2004

  Gold-plated pin for the American Institute of Chemical Engineers (AlChE). The pin is in the shape of a slide rule with the AIChE shield in the center and has a hinged clasp.

  • Manufacturer L.G. Balfour Company
  • Subject Brooches, American Institute of Chemical Engineers, Collectibles