Learn more

E H KUEFFER

Overview
  • Total Patents
    21
About

E H KUEFFER has a total of 21 patent applications. Its first patent ever was published in 1936. It filed its patents most often in United States. Its main competitors in its focus markets transport and electrical machinery and energy are BREV VEREECKE SOC D EXPL DES, WESTFAELISCHE METALL INDUSTRIE and FENIEX IND INC.

Patent filings in countries

World map showing E H KUEFFERs patent filings in countries
# Country Total Patents
#1 United States 21

Patent filings per year

Chart showing E H KUEFFERs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport
#2 Electrical machinery and energy

Top inventors

# Name Total Patents
#1 Metcalf Herbert E 8
#2 Wagn Trautner 7
#3 Howard Clarence B 6
#4 Metealf Herbert E 1
#5 Metcaif Herbert E 1

Latest patents

Publication Filing date Title
US2204096A Unitary signal switch
US2236411A Viscosity coupled switch
US2148489A Rotation indicating switch
US2137319A Signaling lamp
US2175848A Vehicle signaling system
US2147630A Double circuit frictionally restrained switch
US2180688A Steering column directional signal switch
US2141115A Pilot light assembly
US2144096A Signal lamp lens
US2135958A Rotary switch assembly
US2133000A Vehicle signaling system
US2126940A Vehicle signaling system with manual override
US2120876A Holding and releasing switch
US2116842A Butt contact rotary switch
US2119450A Holding switch
US2111931A Vehicle direction indicator
US2103287A Double circuit rotary switch
US2134272A Vehicle signaling switch
US2114731A Vehicle direction indicator
US2153621A Vehicle signal switch