You are here. Home > Data Access > Model > Datasets > Global Ensemble Forecast System (GEFS) A regional North American plot of GEFS forecast data valid at July 13, 2012, at 00 UTC. This 24-hour forecast shows one mean sea-level pressure contour (or isobar) at 1013 hPa for each of the 21 members in the ensemble.
Inventor Mary Anderson received a patent for her car-window cleaning device in 1903. Anderson's invention came about during a trip to New York City when the Alabama-born inventor noticed that streetcar drivers had to open the windows of their cars when it rained in order to see.
Ives W. McGaffney, of Chicago, created a mechanical machine in 1868. Hubert Cecil Booth, an English engineer, built an electric vacuum cleaner in 1901. Daniel Hess invented the vacuum cleaner in 1860. <b>Answer </b><br />Ives W. McGaffney, of Chicago, created a mechanical machine in 1868. <br /> Hubert Cecil Booth, an English engineer, built an electric vacuum cleaner in 1901. <br /><br /><br /><b>Answer </b><br />Daniel Hess invented the vacuum cleaner in 1860.