File:Lodge Spark Oscillator Ball 1894.jpg
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
This work is in the public domain in the United States and the source country. In most cases, this means that its copyright expired under the law of the source country and it was either published prior to January 1, 1930 or its copyright also expired under the law of the United States. Its copyright has also expired in those countries with a copyright term of life of the author plus 50 years or less. To the uploader: please provide relevant publication and authorship details.
For non-US works, consider attaching a country-specific tag if available. | |
|