Inventor
CHENG HO PING
CN14 patents
⚠️ This page may combine multiple inventors who share the name “CHENG HO PING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WORLD WIDE STATIONERY MFG CO
7 patentsUS6036394AMar 14, 2000
Ring metals with linkage locking device
WORLD WIDE STATIONERY MFG CO117 citations97
US5879097AMar 9, 1999
Ring binder
WORLD WIDE STATIONERY MFG CO113 citations97
US7665926B2Feb 23, 2010
Ring mechanism with spring biased travel bar
WORLD WIDE STATIONERY MFG CO30 citations92
US8038361B2Oct 18, 2011
Ready lock ring binder mechanism
WORLD WIDE STATIONERY MFG CO7 citations84
US7744300B2Jun 29, 2010
Ready lock ring binder mechanism
WORLD WIDE STATIONERY MFG CO11 citations84
US7891901B2Feb 22, 2011
Ready lock ring binder mechanism
WORLD WIDE STATIONERY MFG CO6 citations73
US7819602B2Oct 26, 2010
Ring binder mechanism
WORLD WIDE STATIONERY MFG CO6 citations70