Invented by Whom.common inventions and their inventors

this slide contain inforamtion regarding the important human inventions

1. Invented by Whom Memorize with I rum khan

2. Common inventions and inventors Ball point was invented C. barrio of Hungary in 1931 Lewis Edson Waterman fountain pen Pen ,” meaning a writing implement,  comes from “ penna ,” the Latin word for wing or feather, because some of the first writing pens were made of feathers .

3. Microphone David Hughes, Safety pin William H urst Clock (Mechanical) Hsing and Ling – Tsan Electric iron H W S weeley Electromagnet W sturgeon Bicycle K. Macmillan Revolver Samuel coat M otorcycle Edward butler Motor car Karl Benz

4. W e will cover the 10 inventions daily keep watching