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Patent Archive
#441661
Patent Information
Sand Glass
William Dean Hawley
December 2, 1890
Patent #441661
Patent Number: | 441661 |
Description: | Sand Glass |
Inventor(s): | William Dean Hawley |
Patent Date: | Dec 2, 1890 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |