Pocket Watch Database
Patent Archive
#2417437
Patent Information
Method Apparatus Produce Sapphire Hollow Art
M. C. Cannon
May 31, 1949
Patent #2417437
Manufacturer: | Elgin |
Patent Number: | 2417437 |
Description: | Method Apparatus Produce Sapphire Hollow Art |
Inventor(s): | M. C. Cannon |
Assignee: | Elgin Natl Watch Co |
Patent Date: | May 31, 1949 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |