Jonathan M. Gregory

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So Berwick, ME, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for forming a groove in a glass tube
- Patent number 5,167,420
- Issue date Dec 1, 1992
- GTE Products Corporation
- Jonathan M. Gregory
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Apparatus for forming a groove in a glass tube
- Patent number 5,017,208
- Issue date May 21, 1991
- GTE Products Corporation
- Jonathan M. Gregory
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for forming a groove in a glass tube
- Patent number 4,923,498
- Issue date May 8, 1990
- GTE Products Corporation
- Jonathan M. Gregory
- C03 - GLASS MINERAL OR SLAG WOOL