Sudo; Norito

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Porous film and porous film manufacturing apparatus
- Patent number 5,352,108
- Issue date Oct 4, 1994
- Sudo; Norito
- Seiji Kagawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Porous film manufacturing apparatus
- Patent number 5,257,923
- Issue date Nov 2, 1993
- Sudo; Norito
- Seiji Kagawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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