Ontario
Canada
2
2019-04-04
2
2019-05-07
These are the the leading inventors for applications assigned to RISI STONE, INC.:
RISI STONE, INC. based in Ontario, CA has been assigned the rights to these inventions. The list includes both Pending Applications and Patent Grants:
Reversible segmental retaining wall block, molds and methods for manufacturing same, and methods of forming retaining walls with same
#2 | 2016-11-10 ✅ Patent 9,945,118 granted on 2018-04-17Method and mold for manufacturing an interlocking concrete retaining wall block
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