Engineer Alva J. Fisher patented the electric washing machine.
Source
Inventor John Hyatt registered cellulose nitrate (celluloid) as a trademark.
Swedish-American inventor John Ericsson patented the screw propeller design.
Johannes Ostermeier patented the flashbulb for cameras.
Samuel Morse was granted the patents for his telegraph.
Inventor Daniel Cooper patented the first time clock in the US.
