Pocket Watch Database
Patent Archive
#2584786
Patent Information
Timepiece Method Providing Spiral Helix Spring
Louis R. Burghoff
February 5, 1952
Patent #2584786
| Patent Number: | 2584786 |
| Description: | Timepiece Method Providing Spiral Helix Spring |
| Inventor(s): | Louis R. Burghoff |
| Assignee: | E Ingraham Co |
| Patent Date: | Feb 5, 1952 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
