| INVENTION | INVENTOR | COUNTRY | YEAR |
| Match(safety) | J.E. Lurdstrom | Sweden | 1855 |
| Microphone | David Hughes | USA | 1878 |
| Microscope | Z. Jansen | Netherlands | 1590 |
| Motor car(petrol) | Karl Benz | Germany | 1885 |
| Motorcycle | Edward Butler | England | 1884 |
| Neon lamp | G. Claude | France | 1915 |
| Nylon | Dr. W.H. Carothers | USA | 1937 |
| Photography(paper) | W.H. Fox tablot | England | 1835 |
| Printing press | J. Gutenberg | Germany | 1455 |
| Radar | Dr. A H taylor & L.C Young | USA | 1922 |
| Radium | Marie & Pierre Curie | France | 1898 |
| Radio | G. Marconi | England | 1901 |
| Rayon | American Viscose Co. | USA | 1910 |
| Razor(safety) | K.G. Gillette | USA | 1895 |
| Razor(electric) | Col. J. Schick | USA | 1931 |
| Refrigerator | J. Harison & A. Catlin | Britain | 1834 |
| Revolver | Samuel colt | USA | 1835 |
| Rubber(vulcanised) | Charles Goodyear | USA | 1841 |
| Rubber(waterproof) | Charles Macintosh | Scotland | 1819 |
| Safety lamp | Sir humphrey davy | England | 1816 |
| Safety pin | William hurst | USA | 1849 |
| Sewing machine | B. Thimmonnier | France | 1830 |
| Scooter | G. Bradshaw | England | 1919 |
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