Hartmut Keller

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Selb/Bayern, DE

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Patents Grantslast 30 patents

Information Patent Grant
Ceramic burner head
- Patent number 4,531,908
- Issue date Jul 30, 1985
- Kernforschungsanlage Julich GmbH
- Siegfried Forster
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Decorative flatware handles and process for their preparation
- Patent number 4,521,356
- Issue date Jun 4, 1985
- Rosenthal Aktiengesellschaft
- Hartmut Keller
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Refractory articles and composite metal-ceramic articles (cermets)...
- Patent number 4,277,539
- Issue date Jul 7, 1981
- Rosenthal Technik AG
- Hartmut Keller
- B22 - CASTING POWDER METALLURGY