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Nikola Tesla, Charles Steinmetz, Edwin Armstrong, Philo Farnsworth, Inventors, 1983 HF First Issue
United States Commemorative Postage Stamps Honoring American Inventors Charles Steinmetz, Edwin H. Armstrong, Nikola Tesla, Philo T. Farnsworth,
Nikola Tesla, Electrical Engineering Genius, Inventor - Induction Motor, Tesla Coil, Developed Alternating Current Power Transmission, Worked on Wireless Power Transmission, Performed Spectacular Demonstrations with Electricity,
Edwin H. Armstrong, Father of FM Radio, Frequency Modulation Transmission, He devised the superheterodyne circuit which is the basic circuit used in most radio and television receivers.
Filo T. Farnsworth, Electrical Engineering Inventor of Image-dissector T.V. Camera; Patents include: Electron Multiplier Photo Electric Apparatus, Electron Multiplying Device, Oscillation Generator, Multipactor Phase Control,
Radiation Frequency Converter,
Means and Method of Operating Electron Multipliers,
Multipactor,
Multiplier Coupling System,
Charge Storage Dissector Tube,
Multistage Multipactor,
Split Cathode Multiplier Tube,
Means for Electron Multiplication,
Means for Producing Incandescent Images,
Two Stage Electron Multiplier,
RF Frequency Multipactor Amplifier,
Self-Energized AC Multiplier,
Oscillator,
Means for Producing an Incandescent Image,
Electron Multiplier,
Method of Operating Electron Multiplier,
Cold Cathode Electron Discharge Tube,
Diode Oscillator Tube Construction,
Shielded Anode Electron Multiplier,
Means and Method for Producing Electron, Multiplication,
Split Cathode Multiplier,
X-ray projection Device,
Charles Steinmetz patented a "system of distribution by alternating current" and possessed a profound understanding of electromagnetic theory. He developed a theory of magnetic hysteresis and held many patents.
Issued September 21, 1983 in Washington, DC,
First Day of Issue Cover, FDC, House of Farnam Engraving Cachet, Unaddressed, Ideal for Framing,
Cover in Removable Transparent Poly Sleeve and Mailed With Protection,
Made in the USA
Genuine First Day of Stamp Issued Cover Cancelled on the First Day of Issue Date by the U.S. Postal Service,
Nikola Tesla, Electrical Engineering Genius, Inventor - Induction Motor, Tesla Coil, Developed Alternating Current Power Transmission, Worked on Wireless Power Transmission, Performed Spectacular Demonstrations with Electricity,
Edwin H. Armstrong, Father of FM Radio, Frequency Modulation Transmission, He devised the superheterodyne circuit which is the basic circuit used in most radio and television receivers.
Filo T. Farnsworth, Electrical Engineering Inventor of Image-dissector T.V. Camera; Patents include: Electron Multiplier Photo Electric Apparatus, Electron Multiplying Device, Oscillation Generator, Multipactor Phase Control,
Radiation Frequency Converter,
Means and Method of Operating Electron Multipliers,
Multipactor,
Multiplier Coupling System,
Charge Storage Dissector Tube,
Multistage Multipactor,
Split Cathode Multiplier Tube,
Means for Electron Multiplication,
Means for Producing Incandescent Images,
Two Stage Electron Multiplier,
RF Frequency Multipactor Amplifier,
Self-Energized AC Multiplier,
Oscillator,
Means for Producing an Incandescent Image,
Electron Multiplier,
Method of Operating Electron Multiplier,
Cold Cathode Electron Discharge Tube,
Diode Oscillator Tube Construction,
Shielded Anode Electron Multiplier,
Means and Method for Producing Electron, Multiplication,
Split Cathode Multiplier,
X-ray projection Device,
Charles Steinmetz patented a "system of distribution by alternating current" and possessed a profound understanding of electromagnetic theory. He developed a theory of magnetic hysteresis and held many patents.
Issued September 21, 1983 in Washington, DC,
First Day of Issue Cover, FDC, House of Farnam Engraving Cachet, Unaddressed, Ideal for Framing,
Cover in Removable Transparent Poly Sleeve and Mailed With Protection,
Made in the USA
Genuine First Day of Stamp Issued Cover Cancelled on the First Day of Issue Date by the U.S. Postal Service,
