Microwaves, being natural physical entities, were never "invented," rather, their presence was discovered. Microwaves are a small component of a very broad spectrum of electromagnetic fields which includes colors, UV, radio waves, and even "heat waves" (called infrared). To ask when microwaves were invented is like asking when the color blue was invented. The microwave oven was patented and produced in 1945 by Percy Spencer.
it was first introduced in the year 1973
Amana introduced the world's first 115-volt countertop microwave oven in 1967. Geared specifically for consumer use, the product sold for $495 retail.
The Mazda3 was introduced for the 2004 model year
1929 was when the kleenex was introduced
2007 Was the first year Howrse was introduced.
Ring Pop was first introduced in 1977.
The Lincoln penny was first introduced in 1909.
In the year 1975, the Members Only jackets were first Introduced. In the year 1980, they were first introduced in American Markets by Europe craft imports.
1924
1924
the year was 1975
1985