Important Inventions and Discoveries in World » Exercise – 1
51. What African-American inventor received 5 patents in the field of shoemaking?
(a) Elijah McCoy
(b) Jan Ernst Matzeliger
(c) Ernest Just
(d) Lewis Latimer
| Subject Name : General Knowledge |
| Exam Name : UPSC, SSC, KVS, NVS, IBPS, RBI, SBI, RRB |
| Posts Name : Post Graduate Teacher, College Lecturer, Officer, Office Assistant, Clerk |
| General Knowledge Books |
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