Dwight G. McSmith, Periodic Table’ Display Device, Patent-1973
“Braille Code for Chemical Notation”, American Printing House for the Blind, 1997 was the topic of an earlier blog post. Here I present: Dwight G. McSmith, Periodic Table’ Display Device, Patent-1973. INTRODUCTION. The “ABSTRACT” of the invention is as follows: ABSTRACT. “A three dimensional device for displaying the chemical elements’ in substantially continuous helical sequence with … Continue reading Dwight G. McSmith, Periodic Table’ Display Device, Patent-1973
