DescriptionAccordina drawing from US Patent 2461806.png
English: Drawing from U.S. Patent 2,461,806 describing André Borel's improved "chromatic harmonicon" with chromatic button accordion keyboard. This instrument, a type of melodica, is better known as the accordina.
The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See
37 CFR 1.71(d),
37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain.
Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as
{{PD-ineligible}}.
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DescriptionAccordina drawing from US Patent 2461806.png
English: Drawing from U.S. Patent 2,461,806 describing André Borel's improved "chromatic harmonicon" with chromatic button accordion keyboard. This instrument, a type of melodica, is better known as the accordina.
The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See
37 CFR 1.71(d),
37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain.
Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as
{{PD-ineligible}}.
Information
Captions
Add a one-line explanation of what this file represents