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JEWELL ELECTRICAL INSTR COMPAN

Overview
  • Total Patents
    19
About

JEWELL ELECTRICAL INSTR COMPAN has a total of 19 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United States and Canada. Its main competitors in its focus markets measurement, electrical machinery and energy and telecommunications are TAYLOR ELECTRICAL INSTR LTD, SCHWEITZER MFG CO E and TIANJIN ZHILIAN HENGXIN ELECTRIC POWER EQUIPMENT CO LTD.

Patent filings in countries

World map showing JEWELL ELECTRICAL INSTR COMPANs patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 1

Patent filings per year

Chart showing JEWELL ELECTRICAL INSTR COMPANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Miller John H 11
#2 Daley James C 2
#3 Mabie Edmund L 2
#4 Douglass Hawley 1
#5 Ray Simpson 1
#6 Hoover Joseph C 1
#7 Burtch Joel A 1

Latest patents

Publication Filing date Title
US1913992A Switching device
US1948729A Radio set testing apparatus
US1877008A Electric meter
US1957074A Method and apparatus for testing thermionic tubes
US1913766A Method and apparatus for testing audion tube circuits and devices
US1940222A Tube testing system
US1805094A Set checker
US1610304A Meter
US1805089A Radio testing device
US1771504A Thermionic-valve-testing instrument
US1589812A Alternating-current voltammeter
US1945802A Radio tube tester
US1805074A Radio testing device
US1748847A Radio-tube-testing instrument
US1527425A Electrical measuring equipment
US1663768A Electrical measuring instrument
US1464510A Electrolyte-level indicator
US1408759A Battery tester
CA338531A Radio tube tester