21st Century Structures, LLC

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Naperville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Concrete panel trailer assembly with strut-mounted wheels
- Patent number 7,607,873
- Issue date Oct 27, 2009
- 21st Century Structures, LLC
- Richard F. Wehrli
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Precast concrete panel combination trailer and storage rack assembly
- Patent number 6,821,066
- Issue date Nov 23, 2004
- 21st Century Structures, LLC
- Richard F. Wehrli
- B60 - VEHICLES IN GENERAL

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