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A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and
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The original patent should be checked for the presence of such language before an assumption is made that the contents are in the public domain. (This template can be replaced by
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Permanent wave machine invented by
Marjorie Joyner in 1928 (The first African American woman to recieve a patent)- Patent Expired {{PD-US-patent}}
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Permanent wave machine invented by
Marjorie Joyner in 1928 (The first African American woman to receive a patent) - Patent Expired
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Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.
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Permanent wave machine invented by
Marjorie Joyner in 1928 {{PD-US-patent}}
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the contents of United States patents are in the public domain
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Commons is a freely licensed media file repository.
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
