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HOPPING ALVIN S

Overview
  • Total Patents
    11
About

HOPPING ALVIN S has a total of 11 patent applications. Its first patent ever was published in 1935. It filed its patents most often in United States. Its main competitors in its focus markets consumer goods, machines and environmental technology are HAMMOND INSTR CO, JOHN HALMAGYI and MOOG MUSIC INC.

Patent filings in countries

World map showing HOPPING ALVIN Ss patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing HOPPING ALVIN Ss patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hopping Alvin S 11

Latest patents

Publication Filing date Title
US4010607A Internal combustion engine with afterburner, venturi cooler and exhaust turbine
US3637916A Electronic musical instrument employing differential transformer for signal coupling
US3595981A Electronic stringed musical instrument with plural resonators and pickup
US3622681A Electronic musical instrument employing free-beam electromechanical resonators and a hand-held baton
US3524375A Simulated stringed electronic musical instrument having gradual switch for attack,decay and volume control
US3495020A Frequency stabilized glow-discharge tube oscillator and electrical musical instrument employing the same
US3322877A Electrical musical instrument having fingerboard with continuously variable finger tone spacing
US3223771A Electronic musical instrument employing finger-pressure means to sequentially energize oscillator means and amplifier means
US3139475A Frequency stabilized glow-discharge tube oscillator and electrical musical instrument employing the same
US3127782A Electromechanical drive mechanism
US2031652A Thermostatically controlled damper device