Pocket Watch Database
Patent Archive
#407945
Patent Information
Clock Electric
Alfred Speer
July 30, 1889
Patent #407945
| Patent Number: | 407945 |
| Description: | Clock Electric |
| Inventor(s): | Alfred Speer |
| Patent Date: | Jul 30, 1889 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
