Approximately when was television invented?

I think John Logie Baird did his first demonstrations in 1925.
EDIT: Yeah, my memory was correct. And apparently the BBC started broadcasting TV in 1935, but the war killed TV for a long time.

Vladimir Zworykin invented a cathode ray tube around 1915, I think. This was the forerunner of television. There were TV broadcasts back in the 1930s, but very few people had televisions to receive them.

1920s I think. The first hockey game was televised in 1939 (NYC), so it had already been around for awhile.

I remember in the early 50's we had a Dumont tv and there was a Dumont channel outta NYC.

I think T.V. was first demonstrated at the 1939 world's fair.

40's I think. But I wasn't around then so am not sure.

Before 1965, I think.

Mid 1940s