METAL INDUSTRIES OF CALIFORNIA

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4831778 Upper window sash with projections for simplified sash installation and removalExpiredSep 11, 87May 23, 89[E05D]
4827685 Insulator for rail interlock at upper/lower window sash interfaceExpiredSep 18, 87May 09, 89[E04B]
D300255 Frame member for windowsExpiredJul 25, 86Mar 14, 89[]
D300256 Frame member for windowsExpiredJul 25, 86Mar 14, 89[]
4725324 Method of making a thermal barrier construction elementExpiredJul 25, 86Feb 16, 88[B32B]
4688366 Thermal barrier hollow or construction elementExpiredJul 25, 86Aug 25, 87[E04C]
4663896 Window frame membersExpiredJun 05, 86May 12, 87[E04B]
D288244 Corner joint for plastic windowsExpiredAug 01, 83Feb 10, 87[]
D286434 Plastic window frame corner or the likeExpiredAug 01, 83Oct 28, 86[]
4437284 Snap-on false muntin systemExpiredAug 04, 80Mar 20, 84[E06B]

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