Marie Van Brittan Brown and her husband, Albert, filed for the patent in 1966 and received approval three years later.
Dark Skies Official on MSN
R-4 Hoverfly: America's Secret WW2 Jungle Weapon
A, was the penultimate iteration of Igor Sikorsky's pre-war vision for the world's first practical helicopter. And in 1944, ...
Bushcraft Solo Part 6," as we master the essentials of thriving alone in the wild. Delve into advanced bushcraft skills like ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results