Pocket Watch Database
Patent Archive
#411444
Patent Information
Tool Micrometer Calipers
John M. Irmen
September 24, 1889
Patent #411444
Patent Number: | 411444 |
Description: | Tool Micrometer Calipers |
Inventor(s): | John M. Irmen |
Patent Date: | Sep 24, 1889 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |