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Bernd Lewandowski
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Munich, DE
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last 30 patents
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Patent Grant
High-pressure discharge lamp having decoupled ignition and load cir...
Patent number
5,990,633
Issue date
Nov 23, 1999
Patent-Treuhand-Gessellschaft fur elektrische Gluehlampen mbH
Guenther Hirschmann
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Quartz glass with reduced ultraviolet radiation transmissivity, and...
Patent number
5,572,091
Issue date
Nov 5, 1996
Patent-Treuhand-Gesellschaft f ur elektrische Gl uhlampen mbH
Alfred Langer
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
High-power, single-ended, high-pressure discharge lamp with hot-sta...
Patent number
5,541,472
Issue date
Jul 30, 1996
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen mbH
Wolfgang Greiler
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of making a quartz glass tube having a reduced ultraviolet r...
Patent number
5,464,462
Issue date
Nov 7, 1995
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Alfred Langer
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Double-ended high-pressure discharge lamp
Patent number
5,304,892
Issue date
Apr 19, 1994
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Bernd Lewandowski
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High-pressure, high-power discharge lamp, and method of its manufac...
Patent number
5,264,759
Issue date
Nov 23, 1993
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Bernd Lewandowski
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Single-based high-pressure discharge lamp
Patent number
5,164,630
Issue date
Nov 17, 1992
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Wolfgang Greiler
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Socket for single-based high-pressure discharge lamp
Patent number
5,120,242
Issue date
Jun 9, 1992
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Wolfgang Greiler
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
AC high pressure discharge lamp, especially for high current level...
Patent number
5,081,396
Issue date
Jan 14, 1992
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Johannes Schneider
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High-power, high-pressure metal halide discharge lamp with improved...
Patent number
4,647,814
Issue date
Mar 3, 1987
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Alexander Dobrusskin
H01 - BASIC ELECTRIC ELEMENTS