When were Ziploc baggies invented?

Answer Ziploc brand zipper storage bags were introduced by the Dow Chemical Company in 1968. This was the first time any company had successfully tested and marketed the bag that is designed to zip shut a... Read More »

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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 ribbons invented?

Ribbons have been around for many centuries since the weaving of cloth began. The modern ribbon first appeared around 1505. In the 16th century, ribbons could only be worn by nobility in English cu... Read More »

When were kaleidoscopes invented?

In 1816, a Scottish physicist named Sir David Brewster invented the kaleidoscope. The invention was patented in 1817. The kaleidoscope uses mirrors to reflect colored pieces of glass to create opti... Read More »

When were herbicides invented?

Prior to World War II, farmers used copper salts, sodium nitrate and iron sulfate to kill weeds on contact. However, the herbicide 2,4-D, identified in 1942 and marketed in 1944, is the first comme... Read More »