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Patents Grantslast 30 patents

Information Patent Grant
Speaker diaphragm
- Patent number 11,974,110
- Issue date Apr 30, 2024
- Yamaha Corporation
- Hiroshi Nakashima
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Speaker Diaphragm
- Publication number 20210258693
- Publication date Aug 19, 2021
- Yamaha Corporation
- Hiroshi NAKASHIMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Speaker Diaphragm and Method for Manufacturing Speaker Diaphragm
- Publication number 20210136498
- Publication date May 6, 2021
- Yamaha Corporation
- Hiroshi NAKASHIMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE