with means to trim off excess material

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a glass optical part
- Patent number 5,275,637
- Issue date Jan 4, 1994
- Canon Kabushiki Kaisha
- Bunryo Sato
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
3306723
- Patent number 3,306,723
- Issue date Feb 28, 1967
- C03 - GLASS MINERAL OR SLAG WOOL