Pocket Watch Database
Patent Archive
#440898
Patent Information
Clock Telephone Line Call
Manman John A. Mc
November 18, 1890
Patent #440898
| Patent Number: | 440898 |
| Description: | Clock Telephone Line Call |
| Inventor(s): | Manman John A. Mc |
| Patent Date: | Nov 18, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
