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H05B31/0084
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H
ELECTRICITY
H05
Electric techniques
H05B
ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
H05B31/00
Electric arc lamps
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H05B31/0084
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Patents Grants
last 30 patents
Information
Patent Grant
2171027
Patent number
2,171,027
Issue date
Aug 29, 1939
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
2156360
Patent number
2,156,360
Issue date
May 2, 1939
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
2059668
Patent number
2,059,668
Issue date
Nov 3, 1936
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
2024318
Patent number
2,024,318
Issue date
Dec 17, 1935
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
2021599
Patent number
2,021,599
Issue date
Nov 19, 1935
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
2003104
Patent number
2,003,104
Issue date
May 28, 1935
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1955143
Patent number
1,955,143
Issue date
Apr 17, 1934
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1949687
Patent number
1,949,687
Issue date
Mar 6, 1934
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1935907
Patent number
1,935,907
Issue date
Nov 21, 1933
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1884417
Patent number
1,884,417
Issue date
Oct 25, 1932
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1882577
Patent number
1,882,577
Issue date
Oct 11, 1932
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1881243
Patent number
1,881,243
Issue date
Oct 4, 1932
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1698917
Patent number
1,698,917
Issue date
Jan 15, 1929
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1596254
Patent number
1,596,254
Issue date
Aug 17, 1926
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1374404
Patent number
1,374,404
Issue date
Apr 12, 1921
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1222537
Patent number
1,222,537
Issue date
Apr 10, 1917
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1139965
Patent number
1,139,965
Issue date
May 18, 1915
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
1034294
Patent number
1,034,294
Issue date
Jul 30, 1912
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
999340
Patent number
999,340
Issue date
Aug 1, 1911
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
994835
Patent number
994,835
Issue date
Jun 13, 1911
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
949151
Patent number
949,151
Issue date
Feb 15, 1910
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
945960
Patent number
945,960
Issue date
Jan 11, 1910
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
932773
Patent number
932,773
Issue date
Aug 31, 1909
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
869914
Patent number
869,914
Issue date
Nov 5, 1907
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
851797
Patent number
851,797
Issue date
Apr 30, 1907
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
761182
Patent number
761,182
Issue date
May 31, 1904
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
749018
Patent number
749,018
Issue date
Jan 5, 1904
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
737343
Patent number
737,343
Issue date
Aug 25, 1903
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
726848
Patent number
726,848
Issue date
May 5, 1903
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
712947
Patent number
712,947
Issue date
Nov 4, 1902
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents