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
Pif Gadget 1965, the title was changed to "Vaillant, le journal de Pif", due to the popularity of its character "Pif", a dog character created by José Cabrero Arnal. Until 1969, "Vaillant" had, like its competitors, serialized some stories over several issues, but the magazine in this incarnation ended with issue number 1238 on February 23, 1969.<ref name="V/P-1969"></ref> "Pif Gadget" started again as a weekly magazine with issue number 1, released on February 24, 1969, but retained the old number relative to "Vaillant". The magazine was called "Pif et son gadget surprise" for the first few months. The "gadget" was a 'free