Takenori Kumagai

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Openable roof
- Patent number 5,062,243
- Issue date Nov 5, 1991
- Shimizu Construction Co., Ltd.
- Takenori Kumagai
- E04 - BUILDING
Information Patent Grant
Openable roof and structure therewith
- Patent number 4,942,698
- Issue date Jul 24, 1990
- Shimizu Construction Co., Ltd.
- Takenori Kumagai
- E04 - BUILDING
Information Patent Grant
Trussed girder, roof framing using the trussed girder and method of...
- Patent number 4,697,397
- Issue date Oct 6, 1987
- Shimizu Construction Co. Ltd.
- Shuji Okuda
- E04 - BUILDING