Anna Baldwin operated a dairy farm in Newark, New Jersey. Her first U.S. patent was filed in 1868 for a device that offered a better method of treating milk to make pomade and butter. Additionally, Baldwin patented an early vacuum milker in 1878. The device was called the Hygienic Glove Milker. It was considered innovative because the milking device created suction rather than trying to replicate milking by hand.
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