'In 1854, he demonstrated his elevator safety device by ascending in an elevator & having the rope cut'
Otis
INVENTORS: In 1854, he demonstrated his elevator safety device by ascending in an elevator & having the rope cut
In 1854, he demonstrated his elevator safety device by ascending in an elevator & having the rope cut
In 1854, he demonstrated his elevator safety device by ascending in an elevator & having the rope cut
INVENTORS
Otis
INVENTORS