Inventor

SPRAGGE JOHN A

CA2 patents

⚠️ This page may combine multiple inventors who share the name “SPRAGGE JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ECO BLOCK LLC

1 patent

US6609340B2Aug 26, 2003

Concrete structures and methods of forming the same using extenders

ECO BLOCK LLC103 citations95

ECO BLOCK

1 patent

US6438918B2Aug 27, 2002

Latching system for components used in forming concrete structures

ECO BLOCK113 citations92