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Patent Archive
#2138890
Patent Information
System & Apparatus For Announce Time
Thorvald A. Solberg
December 6, 1938
Patent #2138890
| Patent Number: | 2138890 |
| Description: | System & Apparatus For Announce Time |
| Inventor(s): | Thorvald A. Solberg |
| Patent Date: | Dec 6, 1938 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
