Pocket Watch Database
Patent Archive
#875392
Patent Information
Recorder Work Man
Frank J. Tran
Frank Cais
December 31, 1907
Patent #875392
| Patent Number: | 875392 |
| Description: | Recorder Work Man |
| Inventor(s): |
Frank J. Tran Frank Cais |
| Patent Date: | Dec 31, 1907 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
