Thanks for the query.
Thomas Davenport (9 July 1802 – 6 July 1851), an American Inventor constructed the first American DC electric motor in 1834. He used it to run a small battery powered car on a short section of track paving the path for future electrification of streetcars.
Source: https://en.wikipedia.org/wiki/Thomas_Davenport_(inventor)
What, invented by William Harbutt of Bath, England in 1897, is composed of calcium salts (principally calcium carbonate), petroleum jelly, and long-chain aliphatic acids (principally stearic acid)?
