Johannes Heckmann

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Luebeck, DE

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Patents Grantslast 30 patents

Information Patent Grant
Flow tester
- Patent number 5,023,055
- Issue date Jun 11, 1991
- Dragerwerk Aktiengesellschaft
- Johannes Heckmann
- G01 - MEASURING TESTING
Information Patent Grant
Testing tube construction for testing gases which are dissolved in...
- Patent number 5,000,919
- Issue date Mar 19, 1991
- Dragerwerk AG
- Johannes Heckmann
- G01 - MEASURING TESTING
Information Patent Grant
Device for the heat treatment of gaseous test samples
- Patent number 5,000,920
- Issue date Mar 19, 1991
- Dragerwerk Aktiengesellschaft
- Johannes Heckmann
- G01 - MEASURING TESTING
Information Patent Grant
Device for the measuring of gas, vapor or aerosol fractions of a me...
- Patent number 4,992,738
- Issue date Feb 12, 1991
- Dragerwerk Aktiengesellschaft
- Wolfgang May
- G01 - MEASURING TESTING
Information Patent Grant
Colorimetric gas measuring device
- Patent number 4,904,449
- Issue date Feb 27, 1990
- Dragerwerk Aktiengesellschaft
- Johannes Heckmann
- G01 - MEASURING TESTING
Information Patent Grant
Device for detecting gases which must be treated before testing
- Patent number 4,800,067
- Issue date Jan 24, 1989
- Dragerwerk Aktiengesellschaft
- Johannes Heckmann
- G01 - MEASURING TESTING