Image: Joyner1
Size of this preview: 365 × 599 pixels. Other resolutions: 146 × 240 pixels | 383 × 629 pixels.
Original image (383 × 629 pixels, file size: 19 KB, MIME type: image/gif)
Description: Permanent wave machine invented by Marjorie Joyner in 1928 (The first African American woman to receive a patent) - Patent Expired (Image sheet 2)
Title: Joyner1
Credit: Scanned Figure or diagram from a US patent
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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