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SIEGEL DAVID T

Overview
  • Total Patents
    18
About

SIEGEL DAVID T has a total of 18 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and surface technology and coating are KAHO KAGI KOFUN YUGENKOSHI, SPECTROL ELECTRONICS CORP and DAITO TSUSHINKI KK.

Patent filings in countries

World map showing SIEGEL DAVID Ts patent filings in countries
# Country Total Patents
#1 United States 13
#2 Canada 5

Patent filings per year

Chart showing SIEGEL DAVID Ts patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Siegel David T 18

Latest patents

Publication Filing date Title
US2790882A Rheostat
US2696978A Furnace conveyer structure
US2557571A Resistor structure and method of manufacture
US2265821A Precision resistor
US2200521A Method of making resistance elements
US2163919A Switch
US2040278A Rheostat
US2045417A Switch
US2040277A Rheostat and potentiometer
US1942496A Electrical resistance unit
US1942495A Rheostat potentiometer
US1948774A Contact for rheostats and method for affixing the same
US1975623A Electrical resistance unit
CA565935A Furnace conveyor structure
CA624276A Rheostat
CA354056A Rheostat potentiometer
CA558846A Resistor structure and method of manufacture
CA409895A Precision resistor