John F. Sipe

Follow

Person

New Holland, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Lightweight concrete masonry unit
- Patent number 6,311,444
- Issue date Nov 6, 2001
- Martin Limestone, Inc.
- John F. Sipe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES