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HAMMOND INSTR CO

Overview
  • Total Patents
    78
About

HAMMOND INSTR CO has a total of 78 patent applications. Its first patent ever was published in 1931. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets consumer goods, machines and measurement are MOOG MUSIC INC, JOHN HALMAGYI and PETERSON RICHARD H.

Patent filings in countries

World map showing HAMMOND INSTR COs patent filings in countries
# Country Total Patents
#1 United States 69
#2 Canada 6
#3 United Kingdom 3

Patent filings per year

Chart showing HAMMOND INSTR COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hanert John M 42
#2 Laurens Hammond 25
#3 Stephens George H 7
#4 George Thomas J 4
#5 Hammond Laurens 3
#6 Meinema Herbert E 3
#7 Hancock Jr David 2
#8 Curtis Westley F 1
#9 Victor Sussin 1
#10 Gilbert Smiley 1

Latest patents

Publication Filing date Title
US2645968A Electrical musical instrument
US2646468A Ear response compensated volume control apparatus
US2626325A Pedal clavier switch mechanism
US2506451A Organ console
US2577752A Tone quality control circuit for electrical musical instruments
US2577753A Electrical musical instrument with tone sustaining means
US2580424A Vibrato apparatus for electrical musical instruments
US2535850A Radio antenna apparatus
US2565512A Tone control apparatus for electrical musical instruments
US2562908A Electrical musical instrument
US2543629A Inductance tuned audio-frequency oscillator
US2508514A Electrical musical instrument
US2499244A Pedal clavier for musical instruments
US2500821A Electrical musical instrument
US2583566A Electrical musical instrument
US2560568A Vibrato apparatus
US2501172A Electrical musical instrument
US2543628A Electrical musical instrument
US2509923A Electrical musical apparatus
US2480132A Electrical musical instrument