When Was the First Workable Ballpoint Pen Patented?
When Was the First Workable Ballpoint Pen Patented? The first workable ballpoint pen was patented in 1937 by László József Bíró, a Hungarian living in Argentina, but...
Read MoreWhen Was the First Workable Ballpoint Pen Patented? The first workable ballpoint pen was patented in 1937 by László József Bíró, a Hungarian living in Argentina, but...
Read MoreHow Do Fingerprints Differ? The skin’s surface is marked by a series of fine lines and ridges which deepen with age. The pattern on the tips of the fingers is peculiar...
Read MoreWho Were the American Inventors, Who Chose to Celebrate Their Life’s Work in Death? Fredric John Baur: A chemist and food storage technician notable for designing and...
Read MoreHow Do Sewing Machines Work? Sewing machines today often work by electricity. But there are over 2,000 different types, with attachments for turning hems, tucking,...
Read MoreWhen Was the Telephone Invented? The invention of the telephone was the culmination of work done by many individuals, and involved an array of lawsuits founded upon the...
Read More