Patent Assignment
Reel/Frame 028998/0419
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded: 2012-09-20
Received: 2012-09-20
Pages: 3
Assignor
MACDONALD, ROBERT A.
Executed: 2012-09-19
Assignee
KEYSTONE RETAINING WALL SYSTEMS LLC
4444 WEST 78TH STREET, MINNEAPOLIS, MN, 55435, UNITED STATES
Covered Application
(1)
SLANT WALL BLOCK AND WALL SECTION INCLUDING SAME
App. No. 13/622,721
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