Oven gas stove included the AGA cooker invented in 1922 by Gustaf Dalén. The first electric ovens were invented in the very late 19th century, however, like many electrical inventions destined for commercial use, mass ownership of electrical ovens could not be a reality until better and more efficient use of electricity was available. More recently, ovens have become slightly more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spencer in 1946, and with the help from engineers, the microwave oven was patented. The microwave oven uses microwave radiation to excite the molecules
Spencer repeating rifle the Fogerty Rifle Company and ultimately to Winchester. Many Spencer carbines were later sold as surplus to France where they were used during the Franco-Prussian War in 1870. Even though the Spencer company went out of business in 1869, ammunition was manufactured in the United States into the 1920s. Later, many rifles and carbines were converted to centerfire, which could fire cartridges made from the centerfire .50-70 brass. Production ammunition can still be obtained on the specialty market. Spencer repeating rifle The Spencer Repeating Rifles and Carbines were early American lever action firearms invented by Christopher Spencer. The Spencer was