Pocket Watch Database
Patent Archive
#1026290
Patent Information
Alternate Current Program System
John L. Wrenn
May 14, 1912
Patent #1026290
| Patent Number: | 1026290 |
| Description: | Alternate Current Program System |
| Inventor(s): | John L. Wrenn |
| Patent Date: | May 14, 1912 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
