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GUARDIAN ELECTRIC MFG CO

Overview
  • Total Patents
    129
About

GUARDIAN ELECTRIC MFG CO has a total of 129 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and control are MASON ELECTRIC CORP, HAYDON SWITCH INC and HUIHU LIANG.

Patent filings in countries

World map showing GUARDIAN ELECTRIC MFG COs patent filings in countries
# Country Total Patents
#1 United States 90
#2 United Kingdom 20
#3 Canada 9
#4 Denmark 5
#5 Germany 3
#6 France 2

Patent filings per year

Chart showing GUARDIAN ELECTRIC MFG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Thedore Obszarny 19
#2 Nelsen Marvin G 17
#3 Obszarny Thedore J 12
#4 John Schmidt 8
#5 Wright William W 6
#6 Obszarny Theodore J 6
#7 Watts Roger E 5
#8 Baker Edward G 5
#9 Rowell John J 5
#10 Vojir Frank S 4

Latest patents

Publication Filing date Title
US5227594A Electrical multi-directional switch
US5161679A Electrical trigger switch with safety features
US4921567A Machine for wrapping tape on bobbin
US4459573A High power pulse operated relay
US4386330A High power pulse operated relay
US4342973A Solenoid annunciator
US4270108A Bistable control switch
US4255626A Multiple position switch
US4272746A Four pole double throw relay
US4041430A Coil bobbin and matching cover for solenoid assembly
US4025884A Relay construction
US4019165A Miniature relay device
US3958200A Blade construction for relay
US3914663A Timing circuit apparatus for use with vehicles
US3863052A Mechanical counter
US3842375A Electrically held three position cutout switch
US3855488A Push button pulse signal generator
US3829802A Process for winding a coil on a reed switch having coil form means mounted on the switch capsule
US3735296A Sequence relay
US3824053A Mold for mounting switch blades and the like