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Patent for telephone went to Bell after years of litigation
One hour before Alexander Graham Bell registered his patent for the telephone in 1876, Elisha Gray patented his design. She transmitted music over a telephone line same year. After years of litigation, the patent went to Bell.
Evidence of practicing Dentistry in 7000BCE
The Indus Valley Civilization has yielded evidence of dentistry being practiced as far back as 7000 BCE. This earliest form of dentistry involved curing tooth related disorders with bow drills operated, perhaps, by skilled bead craftsmen. The reconstruction of this ancient form of dentistry showed that the methods used were reliable and effective.
First Indian to get a U.S. Patent
Sir Jagdish Chandra Bose was first Indian to get a U.S. Patent in 1904 for his galena receiver. The application was filed on 30 September 1901 and it was granted on 29 March 1904 (US patent No. 755,840). However, Bose refused to accept his rights and allowed to lapse the patent.
Thomas Edison Filed 1,093 Patents
Thomas Edison filed 1,093 patents, including those for the light bulb, electric railways and the movie camera. When he died in 1931, he held 34 patents for the telephone, 141 for batteries, 150 for the telegraph and 389 patents for electric light and power.