Bell Telephone Laboratories — list of significant innovations and discoveries

Notes

Downloaded from the author's own archive unless noted. A reference chart he compiled rather than a piece of his writing. Posted with A. Michael Noll's permission, given to the collection's owner in October 2026. Original: http://noll.uscannenberg.org/BTL%20INNOVATION%20LIST%20GRAPH.pdf File md5 1d29eee42f0c2e45dda615fc8d825c97.