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Alexander Graham Bell oli esimene, kellele USA patendiamet andis patendi elektrilise telefoni eest. Pildil Alexander Graham Bell tegemas esimest telefonikõnet New Yorgist Chicagosse (1892)
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.