Robert T. Johnston

Follow

Person

Dearborn Heights, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Disperser seal and method
- Patent number 4,270,762
- Issue date Jun 2, 1981
- Coaltek Corporation
- Robert T. Johnston
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...