During the Great Depression refrigerators started to become electric. This product grew by 30% between 1929-1933. What made people buy them? The answer is that people spent less money on food because refrigeration kept the food fresher for longer time periods. Scotch tape was invented in 1930 by 3M (Minnesota Mining and Manufacturing Company) engineer Richard Drew. People (grocers and bakers) also used Scotch tape to seal food during the Depression. Nylon was invented in 1935 by a DuPont chemist named Wallace Carothers. During the Depression nylon went to the stores in1939 and once it was released it was a hit. People bought it instead of silk. PBS says that the Carothers creation was exactly what DuPont had hoped for. Twinkies were invented in 1930 by Jimmy Dewar. He said it was an inexpensive snack that can be sold at gas stations and grocery stores in America. Dewar was a baker and the company he worked for made strawberry shortcakes, when strawberry season was over Dewar decided to but the machines to use by making a banana creme filled snack cake.You could buy them in a pack of two for a nickel. About 500,000,000 Twinkies were sold on average per year.-

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Scotch tape:

Number of patents issued on inventions and trademarks.
Full-size image (19 K)
Full-size image (19 K)

On March 8,1930 the first frozen foods of Clarence Birdseye were sold in the US - "Fiddlesticks". The first ever colored and sound cartoon aired in1930 by Ub Iwerks. In 1931, RCA Victor introduced the first long-playing phonograph record. In 1936 the bass guitar was invented by Paul Tutmarc who was from Seatle, Washington. A frying pan was the first ever electric lap steel guitar ever produced. -
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Science and Technology
The World's Fair of 1939 carried the theme of "The World of Tomorrow". At this world's fair the fairgoers got to see an image of a TV set at the RCA building. They also got to see an exibit showing a seven lane cross country highway system at a General Motors Exhibit.
There were also medical advances that came in the 1930's. One major advance was a safer way to do blood transfusions. This saved many soldier's lives in the upcoming war. Chicago's Cook County Hospital opened the first blood bank in 1937. This blood bank stored blood that was given by live donors. Improvements in anesthesia were also made which increased the survival rate of persons undergoing major surgery.- -for both the text and the image.-

New York's World Fair - From the 1939 NY Herald Tribune.
New York's World Fair - From the 1939 NY Herald Tribune.