Boyd A. Hirtz

Follow

Person

Chesterfield, MO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of reconstructing pipe systems using fiberglass laminates
- Patent number 4,897,135
- Issue date Jan 30, 1990
- Insituform Mid America, Inc.
- Harry H. Aylor
- E03 - WATER SUPPLY SEWERAGE