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H01J13/20
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H
ELECTRICITY
H01
Electric elements
H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J13/00
Discharge tubes with liquid-pool cathodes
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H01J13/20
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Patents Grants
last 30 patents
Information
Patent Grant
3525895
Patent number
3,525,895
Issue date
Aug 25, 1970
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3441773
Patent number
3,441,773
Issue date
Apr 29, 1969
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3418511
Patent number
3,418,511
Issue date
Dec 24, 1968
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3404301
Patent number
3,404,301
Issue date
Oct 1, 1968
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3300574
Patent number
3,300,574
Issue date
Jan 24, 1967
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2729761
Patent number
2,729,761
Issue date
Jan 3, 1956
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2724786
Patent number
2,724,786
Issue date
Nov 22, 1955
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2612613
Patent number
2,612,613
Issue date
Sep 30, 1952
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2512373
Patent number
2,512,373
Issue date
Jun 20, 1950
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2490542
Patent number
2,490,542
Issue date
Dec 6, 1949
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2386400
Patent number
2,386,400
Issue date
Oct 9, 1945
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2282229
Patent number
2,282,229
Issue date
May 5, 1942
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2265608
Patent number
2,265,608
Issue date
Dec 9, 1941
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2214596
Patent number
2,214,596
Issue date
Sep 10, 1940
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2196401
Patent number
2,196,401
Issue date
Apr 9, 1940
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2184386
Patent number
2,184,386
Issue date
Dec 26, 1939
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2154275
Patent number
2,154,275
Issue date
Apr 11, 1939
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2151576
Patent number
2,151,576
Issue date
Mar 21, 1939
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2095768
Patent number
2,095,768
Issue date
Oct 12, 1937
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2085843
Patent number
2,085,843
Issue date
Jul 6, 1937
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2056034
Patent number
2,056,034
Issue date
Sep 29, 1936
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2037533
Patent number
2,037,533
Issue date
Apr 14, 1936
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2024172
Patent number
2,024,172
Issue date
Dec 17, 1935
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1947412
Patent number
1,947,412
Issue date
Feb 13, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1943250
Patent number
1,943,250
Issue date
Jan 9, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1943242
Patent number
1,943,242
Issue date
Jan 9, 1934
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1933859
Patent number
1,933,859
Issue date
Nov 7, 1933
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1908949
Patent number
1,908,949
Issue date
May 16, 1933
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1901612
Patent number
1,901,612
Issue date
Mar 14, 1933
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
1895944
Patent number
1,895,944
Issue date
Jan 31, 1933
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents