On January 19, 1904, Charles Foglesong received U.S. Patent No. 750179 on an ELectric Blanket:

Electric blanket technology developed relatively quickly. Frank Singer received U.S. Patent No. 751353 on an Electric Blanket a few weeks later, on February 2, 1904. Harlow D. Parker obtained U.S. Patent No. 1,158,834 on a Vibratory Electric Bath Blanket on November 2, 1915.