TERRA-WALL
Filed: November 22, 1983
PRECAST HOLLOW INTERLOCKING MODULES; MODULES FOR USE IN LANDSCAPING, RETAINING WALLS AND FREE STANDING STRUCTURES
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 73453988
REVERS-A-BLOK
Filed: March 25, 1986
PRECAST CONCRETE RETAINING WALL BLOCKS
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 73589957
DURA-HOLD II
Filed: October 25, 1988
INTERLOCKING RETAINING WALL SYSTEMS COMPRISED OF HEADERS, STRETCHERS, CONCRETE BLOCKS AND PLUGS THEREFORE
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 73759785
PISA STONE
Filed: December 19, 1988
CONCRETE PRODUCTS, NAMELY CONCRETE BLOCKS
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 73770443
THE WALL MANAGER
Filed: December 10, 1990
computer software for use in the field of retaining wall structure design
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 74122069
RISIGRID
Filed: December 10, 1990
polyester mesh in sheet or reel form used for soil reinforcement and stabilization for construction of embankments
Owned by: ROTHBURY INVESTMENTS LIMITED
Serial Number: 74124787
