Koken Kaihatsu Co., Ltd.

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Accounting book automatic entering device
- Patent number 5,371,680
- Issue date Dec 6, 1994
- Koken Kaihatsu Co., Ltd.
- Takamitsu Anno
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Method of making a thermoplastic sheet with cement particles for us...
- Patent number 5,271,781
- Issue date Dec 21, 1993
- Koken Kaihatsu Co., Ltd.
- Takamitsu Anno
- B32 - LAYERED PRODUCTS

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