When were o.b. tampons invented?

Answer o.b. tampons were invented in the 1940s by a German gynecologist named Dr. Judith Esser Mittag. They were the first tampons to be developed that did not have an applicator.Source:Cal Poly Pomona: J... Read More »

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When were ob tampons invented?

The German gynecologist Dr. Judith Esser Mittag invented the digital-style, or applicator-less, o.b. tampon during the 1940s. The initials o.b. stand for "ohne binde" which means "nonbinding" in Ge... Read More »

When were cell phones invented&who were they made by?

Martin Cooper invented the cell phone in 1973, and Motorola was its maker. The phone was much bigger and heavier than today's models. Called the DynaTAC, the phone did not go one sale until 10 year... Read More »

When were 78 rpm records invented?

According to the Yale Library, 78 rpm records were invented in 1898 and were made until about 1950. Depending on the disc size, most 78 rpm records have a duration of three to five minutes per side... Read More »

When were buttons invented?

Buttons were first invented around 2000 BC, during the Bronze Age of southern Asia. Buttons were not used as fasteners when they first debuted, and were simply worn for decoration. Early buttons w... Read More »