I was taking it 50 mg every six hours. But what has happened? I have missed the dose and I took two at once. I know that I should not do that and I don't know what I was thinking about while taking it but it has happened. I am afraid of overdose. How much of diphenhydramine is an overdose?
Quick Answer. The train was first invented and patented in 1784, by James Watt. The first working model to be made and successfully run was created in 1804 by Richard Trevithick. Continue Reading.
Who Invented the Train? The history of the train will show that Richard Trevithick made the first steam tramway locomotive in 1804. In 1814, George Stephenson created the Blucher, the first steam locomotive meant for railway use. Records show that as far back as 1550, the Germans had already built rails.