Not Many. There isn't an exact amount, but since the TV with actual screens and pictures on it was made in 1926.. It had to be in between 50-500.
Philo Farnsworth created what would be considered the first modern television set in 1927 which he then showed to the press for the first time on September 1, 1928. Television sets were sold very shortly after this, and the first real use of them came in Germany in 1929 with the first regular broadcasts.
The experimental one that John Logi Baird made was (1925), and it used vertical scan lines not horizontal ones like today's televisions. Did be fooled by your concept of what a television was though, this TV was a crude silhouette and definitely not for public consumption. But the commercial ones like the "GE Octagon" that were sole to the public in 1928 did have sound. However the problem wouldn't have been sound output in 1928, it would have been television transmitting stations. There were less than a handfull world wide at that time.
80 million
If you mean display type, then there are rasterized picture tube televisions, LCD televisions, and plasma televisions.
The murals were discovered in 1928. The murals were discovered in 1928. The murals were discovered in 1928.
The Queen's Messenger - 1928 TV was released on: USA: 11 September 1928
it was invented in 1928
at April 1928
1928
In 1928 by Walt Disney, his first appearance on television was in May 1928, Steamboat Willie
There were many, many people involved as the technology evolved from an opto-mechanical device to one entirely electronic from the 1870s through the 1920s. In 1928, Philo Farnsworth made the world's first TV.
n 1928, Philo Farnsworth
I THINK IT WAS 1928 this answer is from tiana silulu
Kathryn Wessling has: Played Minor Role in "The Beach Club" in 1928. Performed in "The Bargain Hunt" in 1928. Performed in "Motorboat Mamas" in 1928. Performed in "His Unlucky Night" in 1928. Played Minor Role in "The Swim Princess" in 1928.
The Cowboy and the Girl - 1928 is rated/received certificates of: USA:TV-G (TV rating)
Betty Walsh has: Played Betty in "Better Behave" in 1928. Performed in "Shooting the Bull" in 1928. Performed in "Just Wait" in 1928. Performed in "Fish Stories" in 1928. Performed in "Seeing Sights" in 1929.
West of Zanzibar - 1928 is rated/received certificates of: Argentina:Atp USA:TV-G (TV rating)