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Takeshi Yamakawa

Ricoh Company: 2 patents #102 of 695Top 15%
Overall (1997): #22,397 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5610651 Image forming apparatus with frequency corrector Takashi Mama, Kenichi Ono, Norio Michiie 1997-03-11
5598279 Document circulating apparatus with automatic deletion of data Rie Ishii, Masayuki Hayashi, Hiroyuki Takahashi 1997-01-28