- Stepladder – John Balsley, 1862.
- Ice Cream Cone Dispenser – Alexander McLaren, 1919.
- Electric Furnace for cars – Charles L. Lee, 1923.
- Air Conditioner (window/wall units) – Robert R. Candor, 1943.
- Ice tray – Harry A. Toulmin Jr., 1947
- Filter for cigarettes – Malvern J Hiler, 1956.
- Self-defrosting two-temperature refrigerator – Leonard J. Mann and Clifford H. Wurtz, 1961.
- “Joyce” lift (aka Hydraulic lift, vehicle lift) – Ion von Kert Hott, 1958.
- Laminated Safety Glass – David G. Glasgow and Charles E. McClung, 1974.
Nice , my wife’s Father, Leonard J.Mann and a refrigerator patent. Frost Free Refrigerator. He had 41 parents.
“Cool” guy