YF

Yao P. Fang

TC Tong Lung Metal Industry Co.: 1 patents #37 of 49Top 80%
Overall (All Time): #3,971,166 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4653787 Backset-adjustable latch of a cylindrical lock — 1987-03-31