Pocket Watch Database
Patent Archive
#652152
Patent Information
Clock Phonographic
Erwin Treitschke
June 19, 1900
Patent #652152
| Patent Number: | 652152 |
| Description: | Clock Phonographic |
| Inventor(s): | Erwin Treitschke |
| Patent Date: | Jun 19, 1900 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
