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WK
Wai Hing Kim
LR
Learning Resources
: 1 patents #13 of 25
Top 55%
Overall (All Time):
#3,570,630
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Top 90%
1
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Patent #
Title
Co-Inventors
Date
6179682
Teaching toy telephone
Barbara Plain
,
Yau Chung Siu
2001-01-30
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