1921 Article Invention Patent Record Poison Tablet Science Research Magnetic SI1 1933 Chicago World's Fair with a red border

with a red border

and the water aids in reflecting the artificial lighting to keep the cavern aglow

244 Madison Avenue New York

606 Bower Building

Rochester Symphony

1921 Article Invention Patent Record Poison Tablet Science Research Magnetic SI1 1933 Chicago World's Fair with a red borderThis is an original 1921 one page article (one single sided page) of recent patents of the time. Shown is a phonograph record lifter, a revolving wing flying machine, a radio telegraphy, a magnetic deflector for electric arcs, a vision deflector, a poison tablet, a radio receiving system, a submarine vessel, and an automobile traffic signal. CONDITION This 90+ year old Item is rated Near Mint Very Fine. Light aging throughout. No creases. No natural