Martin D. Jahn

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Riverside, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Metal panels for accessible concealed ceiling system
- Patent number 5,311,719
- Issue date May 17, 1994
- Chicago Metallic Corporation
- Martin D. Jahn
- E04 - BUILDING
Information Patent Grant
Open cell lay-in panel
- Patent number 5,241,799
- Issue date Sep 7, 1993
- Chicago Metallic Corporation
- Martin D. Jahn
- E04 - BUILDING
Information Patent Grant
Reinforced bead
- Patent number 4,932,186
- Issue date Jun 12, 1990
- Chicago Metallic Corporation
- Martin D. Jahn
- E04 - BUILDING
Information Patent Grant
Reinforced bead
- Patent number 4,852,325
- Issue date Aug 1, 1989
- Chicago Metallic Corporation
- James J. Dunn
- E04 - BUILDING
Information Patent Grant
Metal building panels for wall applications
- Patent number 4,538,391
- Issue date Sep 3, 1985
- Chicago Metallic Corporation
- Thomas S. Skrabis
- E04 - BUILDING
Information Patent Grant
Clip structure for a concealed grid structure of a suspended ceiling
- Patent number 4,041,668
- Issue date Aug 16, 1977
- Chicago Metallic Corporation
- Martin D. Jahn
- E04 - BUILDING
Information Patent Grant
Suspended ceiling structure, particularly for dry-wall type panels
- Patent number 3,977,144
- Issue date Aug 31, 1976
- Chicago Metallic Corporation
- Martin D. Jahn
- E04 - BUILDING