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Puffed Wheat

Title: Patent Documents for Alexander Anderson
Type: Document
Date: 1902
Source: Minnesota Historical Society

Description: Alexander Anderson prepared these papers in order to get a patent on the process he invented for puffing grain.
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Patent Documents for Alexander Anderson


  1. We know that Alexander Anderson is from Red Wing. Why do you think the patent document states his residence as New York?

  2. Why do you think there are line numbers in the margins of this document?

  3. This application for a patent was filed in February of 1902, but the actual patent (this document) was not completed until August of 1902. Why might it have taken so long?

  4. Why do you think that Anderson was interested in getting a patent for his work?