Today is “hot-air balloon day”. Here is one of the earliest inventions in this field Today is “hot-air balloon day”. And here is one of the earliest inventions in this field: a hybrid airship. For something that’s literally hot inside, this…
Today is VCR day! Here is one of the earliest patents on VCR. Today is VCR day! That’s right, a day dedicated to the technology that entertained your parents and probably you as a child. The VCR…
It's National Donut Day! Williamson began rolling in the dough with this patented 1950 invention. Patent Information Rotary doughnut cutter US 2525987 A Publication date: 17 Oct 1950 Filing date: 29 Sep 1947 Priority date: 29 Sep 1947 Inventors: Adolph…
