Combination Piano-Vacuum Cleaner (July 1917)
Hail Cannons (October 1919)
Growing Mushrooms with Electricity (April 1923)
Beast-Drawn Carriages (November 1924)
Ingenious Farm Gadgets (September 1925)
Airship Hospital (July 1930)
" target="_blank">Automated Grocery Store (October 1933)
War Tank Run by Phonograph (November 1934)
Water Skiing Just Got Easier (October 1937)
Sewing Machine Bicycle (October 1939)
Poochmobile (November 1939)
…..
Images from Popular Science
Thank you to John Pollock
