This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FirstUSpatent. Trans approved by en User Jayvdb This image was copied from en The original description was Image of first US patent PDUSGov page history link date username edit summary org php title Image FirstUSpatent redirect no oldid September en User Jayvdb org php title Image FirstUSpatent redirect no oldid April