ROBERT A. HAENGGI

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WOODBURY, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Retroreflective article
- Patent number 6,451,408
- Issue date Sep 17, 2002
- 3M Innovative Properties Company
- Dale H. Haunschild
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Process for making conformable thermoplastic marking sheet
- Patent number 5,194,113
- Issue date Mar 16, 1993
- Minnesota Mining and Manufacturing Company
- James E. Lasch
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Skid-resistant surface marking material
- Patent number 5,124,178
- Issue date Jun 23, 1992
- Minnesota Mining and Manufacturing Company
- Robert A. Haenggi
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Skid-resistant surface marking material
- Patent number 5,094,902
- Issue date Mar 10, 1992
- Minnesota Mining and Manufacturing Company
- Robert A. Haenggi
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Skid-resistant pavement markings
- Patent number 5,053,253
- Issue date Oct 1, 1991
- Minnesota Mining and Manufacturing Company
- Robert A. Haenggi
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Skid-resistant pavement markings
- Patent number 4,937,127
- Issue date Jun 26, 1990
- Minnesota Mining and Manufacturing Company
- Robert A. Haenggi
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
RETROREFLECTIVE ARTICLE
- Publication number 20020090492
- Publication date Jul 11, 2002
- DALE H. HAUNSCHILD
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES