Pocket Watch Database
Patent Archive
#454569
Patent Information
Tool Caliper
John H. Dyson
June 23, 1891
Patent #454569
| Patent Number: | 454569 |
| Description: | Tool Caliper |
| Inventor(s): | John H. Dyson |
| Assignee: | Wetherell Herman O |
| Patent Date: | Jun 23, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
