Pocket Watch Database
Patent Archive
#1816649
Patent Information
Clock Coin Operate
Nils Magnus Lagerkrans
Anders Torsten Hammerstrand
July 28, 1931
Patent #1816649
| Patent Number: | 1816649 |
| Description: | Clock Coin Operate |
| Inventor(s): |
Nils Magnus Lagerkrans Anders Torsten Hammerstrand |
| Patent Date: | Jul 28, 1931 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
