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We don't know when Man Han Kwong Kwong was born.
There is a record from Ancestry,com for a person of this name who is listed with the US Patent Office in 2013:
Unclassified: "United States Patent and Trademark Office, U.S. Patents, 1970-2019" Ancestry Record 62219 #9360500 (accessed 20 December 2021) Name: Man Kwong Kwong; Residence Place: Los Angeles, California, USA; Application Date: 21 Nov 2013; Employer: Molecular Targeting Technologies, Inc.; Certificate Number: Pct/Us13/71136; Others Listed: Kai Chen Koon Y Pak Brian D Gray Richard W. Yee Man Kwong Kwong.
I found no other records at MyHeritage, BillionGraves, Ancestry, or doing a Google search.
Fetterly-28 11:35, 20 December 2021 (UTC)