Pocket Watch Database
Patent Archive
#D12228
Patent Information
Watch Case
Joseph F. Ludlam
April 19, 1881
Patent #D12228
| Manufacturer: | Keller & Untermeyer |
| Patent Number: | D12228 |
| Description: | Watch Case |
| Inventor(s): | Joseph F. Ludlam |
| Patent Date: | Apr 19, 1881 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: | |
Attributed to Keller & Untermeyer because the witnesses on Ludlam's patent are consistent with the witnesses that appear on patents granted to Keller & Untermeyer during this era. Furthermore, a case has surfaced with this patent date and a unicorn mark, suggesting possible production by Keller & Untermeyer. | |
