 After sea trials were conducted and testing was completed, the USS "Nautilus" became fully operational in January 1955.1955 Hard disk drive

1955 Harmonic drive

1955 Vibrating sample magnetometer

1956 Lint roller

A lint roller or lint remover is a roll of one-sided adhesive paper on a cardboard or plastic barrel that is mounted on a central spindle, with an attached handle.The device facilitates the removal of lint or other small fibers from most materials such as clothing, upholstery and linen.