J B Sash & Door Co., Inc.

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Chelsea, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Window construction with simplified plastic extrusions and interact...
- Patent number 6,244,000
- Issue date Jun 12, 2001
- J B Sash & Door Co., Inc.
- Ugo Bertolami
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS