18 Utility Patents
#121 in Charlotte, NC
#2,052 in North Carolina
#98,495 in US
#194,905 in the World
Forward Citations = 82
Company Filing History:
Drinkard Metalox, Inc.
Deepgreen Engineering, Pte. Ltd.
Drinkard Developments
4. 2 out of 5
Mineral Research & Development Corporation
5. 1 out of 832,492 patents
Other
where one patent can have more than one assignee
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