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.
So, Trevithick invented the first train, Stephenson the first public railway line and the original Steam locomotive was invented and patented by James Watt in 1784, following many years of his work in improving steam engines in general.ichard Trevithick invented the first steam locomotive in 1803, but the iron rails couldn't carry the weight. From there, George Stephenson is credited with the first practica â¦ l steam locomotive.