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The Sex Calculator Edit
Retro Trend of the Past

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The Sex Calculator - Retro Trend of the Past
Retro Trend of the Past
 Published: Jul 11, 07
 Views: 3,750

U.S. Patent Number 1428065 is a sex calculator. This was a device for predicting the sex of your child that was invented by HUBERT BOYDS TIDSWELL in 1920. Here’s how it worked: you had to have already had a child, know its gender, and know the birth date of your unborn child. Voila, you’re having a boy. How does such knowledge get lost in the sands of time?

References:  patft.uspto.gov

Filed In:  bizarre,  pop culture,  unique








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The Sex Calculator