Pocket Watch Database
Patent Archive
#3013380
Patent Information
Spiral Roll
Rudolf Greiner
December 19, 1961
Patent #3013380
| Patent Number: | 3013380 |
| Description: | Spiral Roll |
| Inventor(s): | Rudolf Greiner |
| Patent Date: | Dec 19, 1961 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
