When Knight completed her prototype, she brought it to a machinist to have it recreated out of iron. Another customer, Charles Annan, saw her device and, recognizing its value, copied the design and beat her to the patent office. She sued him, spending $1600 on court and lawyer fees (that's equivalent to almost $29,000 today!), but thanks to the testimony of friends and the meticulous notes she'd kept over the years, she won her case and the right to her invention.
Bibliography: Currie, Stephen. Women Inventors. San Diego: Lucent Books, 2001. Print.
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