IP Library › Granted Patent US 5,820,304
Granted Patent Utility
US 5,820,304 · App. 08/791,751

Blocks for constructing retaining walls

Inventors: Daniel R. Sorheim, Michael Smuda
Patented Case View Patent ↗
Granted: Oct 13, 1998 Filed: Jan 29, 1997
Inventors
Daniel R. Sorheim
Michael Smuda
Assignee (at issue)
Custom Precast & Masonry, Inc.

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Quick Facts
Patent No.
US 5,820,304
App. No.
08/791,751
Filed
1997-01-29
Granted
1998-10-13
Kind
A