Pocket Watch Database
Patent Archive
#455041
Patent Information
Clock Electric Light
Hefner-alteneck Friedrich Von
June 30, 1891
Patent #455041
| Patent Number: | 455041 |
| Description: | Clock Electric Light |
| Inventor(s): | Hefner-alteneck Friedrich Von |
| Patent Date: | Jun 30, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
