1921 Article Invention Patent Record Poison Tablet Science Research Magnetic SI1 1933 Chicago World's Fair a Division of General Motors

a Division of General Motors

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

Concepcion del Oro

Rochester Symphony

with a red border

1921 Article Invention Patent Record Poison Tablet Science Research Magnetic SI1 1933 Chicago World's Fair a Division of General MotorsThis 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