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H01H50/72
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ELECTRICITY
H01
Electric elements
H01H
ELECTRIC SWITCHES RELAYS SELECTORS EMERGENCY PROTECTIVE DEVICES
H01H50/00
Details of electromagnetic relays
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H01H50/72
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Patents Grants
last 30 patents
Information
Patent Grant
Impulse mercury relay with magnetic interlock switch
Patent number
4,642,593
Issue date
Feb 10, 1987
George H. Elenbaas
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3699485
Patent number
3,699,485
Issue date
Oct 17, 1972
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3510618
Patent number
3,510,618
Issue date
May 5, 1970
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3342965
Patent number
3,342,965
Issue date
Sep 19, 1967
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3240900
Patent number
3,240,900
Issue date
Mar 15, 1966
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3040147
Patent number
3,040,147
Issue date
Jun 19, 1962
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2830153
Patent number
2,830,153
Issue date
Apr 8, 1958
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2744980
Patent number
2,744,980
Issue date
May 8, 1956
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2545669
Patent number
2,545,669
Issue date
Mar 20, 1951
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2542668
Patent number
2,542,668
Issue date
Feb 20, 1951
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2378986
Patent number
2,378,986
Issue date
Jun 26, 1945
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2355909
Patent number
2,355,909
Issue date
Aug 15, 1944
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2312485
Patent number
2,312,485
Issue date
Mar 2, 1943
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2291615
Patent number
2,291,615
Issue date
Aug 4, 1942
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
2221973
Patent number
2,221,973
Issue date
Nov 19, 1940
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2070740
Patent number
2,070,740
Issue date
Feb 16, 1937
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2066894
Patent number
2,066,894
Issue date
Jan 5, 1937
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2046273
Patent number
2,046,273
Issue date
Jun 30, 1936
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2046272
Patent number
2,046,272
Issue date
Jun 30, 1936
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2016790
Patent number
2,016,790
Issue date
Oct 8, 1935
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1997477
Patent number
1,997,477
Issue date
Apr 9, 1935
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967945
Patent number
1,967,945
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967948
Patent number
1,967,948
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967942
Patent number
1,967,942
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967954
Patent number
1,967,954
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967944
Patent number
1,967,944
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967951
Patent number
1,967,951
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1967943
Patent number
1,967,943
Issue date
Jul 24, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1739435
Patent number
1,739,435
Issue date
Dec 10, 1929
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1667747
Patent number
1,667,747
Issue date
May 1, 1928
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents