Pocket Watch Database
Patent Archive
#206872
Patent Information
Time Lock
Joseph L. Hall
August 13, 1878
Patent #206872
| Patent Number: | 206872 |
| Description: | Time Lock |
| Inventor(s): | Joseph L. Hall |
| Patent Date: | Aug 13, 1878 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
