Some things that were invented in 1928 are the ice cube tray, and the electric razor. Other items on the list are the negative pressure ventilator and Freon. Penicillin wasn't exactly invented, but it was discovered in 1928.
FM Radio
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in 1928 dubble bubble gum, audiotape,bread-slicing machine , iron lung were invented
Sir Alexander Fleming discovered penicillin in 1928.
One of the most important inventions is the penicillin which was discovered in 1928. Another very important invention was the invention of compass, which was discovered by ancient China in the 9th century.
The most influential inventions for modern people around 100 years ago : 1. Penicillin, in 1928, as the first antibiotic 2. Semiconductor research by a lot of scientists. Without semiconductor, we don't have computer / smartphone like today
Hovannes Adamian (Armenian: Հովհաննես Ադամյան 1879-1932) was an Armenian engineer, an author of more than 20 inventions. The first experimental color television was shown in London in 1928 based on Adamian's tricolor principle and he is recognized as one of the founders of color television
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You can find some inventions in the Wikipedia article "List of inventions".
Inventions are the base of science.