Eric N. Hockert

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Cottage Grove, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Transparent sheets containing directional images and method for for...
- Patent number 4,691,993
- Issue date Sep 8, 1987
- Minnesota Mining and Manufacturing Company
- Gerald R. Porter
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Transparent retroreflective sheets containing directional images an...
- Patent number 4,688,894
- Issue date Aug 25, 1987
- Minnesota Mining and Manufacturing Company
- Eric N. Hockert
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Directionally imaged sheeting
- Patent number 4,634,220
- Issue date Jan 6, 1987
- Minnesota Mining and Manufacturing Company
- Eric N. Hockert
- G06 - COMPUTING CALCULATING COUNTING