P. H. Tech Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D308729 Window frame extrusionExpiredNov 21, 88Jun 19, 90[]
4864747 Support assembly for a dragline bucketExpiredFeb 29, 88Sep 12, 89[E02F]
D301746 Window frame extrusionExpiredFeb 03, 87Jun 20, 89[]
D301625 Window frame extrusionExpiredFeb 03, 87Jun 13, 89[]
D301626 Window frame extrusionExpiredMar 18, 87Jun 13, 89[]
D301172 Window frame extrusionExpiredFeb 03, 87May 16, 89[]
D301173 Window frame extrusionExpiredFeb 03, 87May 16, 89[]
D301065 Window frame extrusionExpiredMar 18, 87May 09, 89[]
D301066 Window frame extrusionExpiredMar 18, 87May 09, 89[]
D301067 Window frame extrusionExpiredMar 18, 87May 09, 89[]
D301068 Window frame extrusionExpiredMar 18, 87May 09, 89[]
D300664 Window frame extrusionExpiredMar 18, 87Apr 11, 89[]
D300567 Window frame extrusionExpiredMar 18, 87Apr 04, 89[]
D300568 Window frame extrusionExpiredMar 18, 87Apr 04, 89[]
4262451 Roller assembly for a sliding frame closureExpiredApr 27, 79Apr 21, 81[E05D]
4253278 Roller device for a sliding closureExpiredApr 27, 79Mar 03, 81[E05D]

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