 1953 Heart-lung machine

1953 Voltmeter (digital)

1953 Marker pen

1953 WD-40

1953 Apgar scale

1953 Gilhoolie

1953 Wheel clamp

1953 Wiffle ball

1953 MASER

1953 Carbonless copy paper

1953 Crossed-field amplifier

1954 Zipper storage bag

A zipper storage bag is a plastic bag with a sealed or zipped opening that allows for transparent viewing of stored items inside the bag.Better known under the brand name and genericized trademark "Ziploc", zipper storage bags are commonly used to hold perishable foods and snacks.Zipper storage bags were patented by Robert W. Vergobbi on May 18, 1954.