Dennis Warren Miller
Physician at Fountain Hl Blvd, Scottsdale, AZ

6513293, Feb 4, 2003

May 24, 2001

09/866024

Dennis Miller - Scottsdale AZ 85259

E04C 140

524051, 524054, 5230912, 52606, 52503, 525926

A building block for constructing masonry block walls includes a concrete block formed with first, second and third spaced parallel rectangular side walls, where the second side wall is intermediate the first and third side walls. First and second vertical end cross webs connect the first and second side walls; and a notch is formed in the upper surface of each of these vertical end cross webs. First and second spaced intermediate vertical cross webs are located in planes between the planes of the end cross webs and connect the second and third side walls. These intermediate cross webs each also have a notch extending downwardly from the top thereof. A first insulating core is dimensioned to fill the space between the first and second side walls and first and second end cross webs. Ears or protrusions extend outwardly from the insulating core to fit into the notches in the end cross webs. A second insulating core is dimensioned to fit into the space between the second and third side walls and the first and second intermediate cross webs.