Norio Otsuga

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Toyama-ken, JP

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Patents Applicationslast 30 patents

Information Patent Application
CONNECTION STRUCTURE FOR A MANHOLE PIPE AND A SEWER MAIN PIPE
- Publication number 20120020740
- Publication date Jan 26, 2012
- Norio Otsuga
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...