Pocket Watch Database
Patent Archive
#1871620
Patent Information
Machine Watch Case Heater
Herman T. Kraft
August 16, 1932
Patent #1871620
| Patent Number: | 1871620 |
| Description: | Machine Watch Case Heater |
| Inventor(s): | Herman T. Kraft |
| Assignee: | General Time & Rubber Co |
| Patent Date: | Aug 16, 1932 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
