Cheuk A. Cheng

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New Brighton, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Transport mechanism for large structures such as retractable stadiu...
- Patent number 6,415,556
- Issue date Jul 9, 2002
- Uni-Systems, Inc.
- Cyril J. Silberman
- E04 - BUILDING
Information Patent Grant
Retractable stadium roofs and transport mechanism therefor
- Patent number 6,367,206
- Issue date Apr 9, 2002
- Uni-Systems, Inc.
- Cyril J. Silberman
- E04 - BUILDING
Information Patent Grant
Retractable stadium roofs and transport mechanism therefor
- Patent number 6,082,054
- Issue date Jul 4, 2000
- Cyril J. Silberman
- E04 - BUILDING