In the 1950s or 60s there was a cartoon with two scientists in white lab coats. One character was tall and thin and the other short. What was the name of this cartoon?

You must be thinking of a segment of The Alvin Show, featuring Alvin and the Chipmunks. Sharing the half hour with the Chipmunks was Clyde Crashcup, a wacky inventor. With the help of usually silent assistant Leonardo (who only whispered into Crashcup's ear), the professor lectured the audience on his various 'inventions'%97birthdays, the bathtub, the wife, soap, etc. I believe the name of this cartoon was 'The Adventures of Clyde Crashcup.'