Pocket Watch Database
Patent Archive
#1615227
Patent Information
Clock Main Spring Drum Ratchet
Ernst Paul Lehmann
January 25, 1927
Patent #1615227
| Patent Number: | 1615227 |
| Description: | Clock Main Spring Drum Ratchet |
| Inventor(s): | Ernst Paul Lehmann |
| Assignee: | Firm Of Ernst Paul Lehman |
| Patent Date: | Jan 25, 1927 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
