Pocket Watch Database
Patent Archive
#877949
Patent Information
Start Means 4 Sound Reproduce Mech
Peter M. Ravenskilde
February 4, 1908
Patent #877949
| Patent Number: | 877949 |
| Description: | Start Means 4 Sound Reproduce Mech |
| Inventor(s): | Peter M. Ravenskilde |
| Patent Date: | Feb 4, 1908 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
