Ghaziabad is one of the famous district in UTTAR PRADESH state. We have marked the location of Vaishali Ghaziabad on Google map. Vaishali Ghaziabad pin code has total six digits. First digit is 2, second digit is 0, third digit is 1, fourth digit is 0, fifth digit is 1 and sixth digit is 2.
Refrigeration completely wiped out the ice-box industry. Who Invented The Refrigerator. The first inventor of the refrigerator was Oliver Evans in 1805, however William Cullen invented the process in 1748 and Jacob Perkins invented more practical improvements in 1834.
'It's never had to have any sort of maintenance and the only thing that's ever gone is the lightbulb for the door,' added Mr Stephens. The world's first microwave oven was built in America in 1947 by technology firm Raytheon, which filed the first patent after employee Percy Spencer made the breakthrough.