PATENT / APPLIED FOR
Picture Courtesy Tommy Bolack
CD 138.9: USA
|
Picture Courtesy Tommy Bolack |
This most unusual CD was found in Michigan. It is nicknamed the "twinpin". It is not known how the unusual design was intended to be used, nor what glass house manufactured this neat insulator. It is marked Patent Applied For, but no patent has been found matching this design.
Return to the National Insulator Association home page