Otis Patent Anniversary
By Jim Colburn; posted August 26, 2018
View Original: Click to zoom, then click to magnify (1920 x 1383) 351KB
|
Yep, the famous Otis LRI was patented on this date back in 1851. These two pieces shown bear that patent date. See https://reference.insulators.info/patents/detail/?patent=U8316 |