What year was the microwave oven and the typewriter invented?

Microwave Oven:

The microwave oven was invented accidentally (did you ever notice that most great inventions or occurrences are accidents? 8>0 ) by Percy Spencer in Waltham, Massachusetts. Spencer was actually given the task of making magnetrons for radar sets for the Raytheon company, and he gave a microwave to them instead! The first microwave oven was presented to the public by the Raytheon Company in 1947, and it was a bulkier, much more energy consuming device that the modern one today, weighing 700 pounds! The ovens weren't very popular in the '50s and '60s, but in the early '70s, they sold faster than ice cream on a blazing day! In 1975, one MILLION microwaves were sold!!  

Typewriter:

The first useful typewriter was made by Christopher Latham Sholes in 1868.