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The The OEIS Foundation, Inc. owner is known worldwide for his trademarks. These brands are in demand in services such as For: On-line reference encyclopedia featuring a searchable database of integer sequences International Class(es): 041- Primary Class U.S Class(es): 100,101,107 Class Status: ACTIVE Basis: 1(a) First Use: Apr. 26, 2003 Use in Commerce: Apr. 26, 2003, For: On-line reference encyclopedia featuring a searchable database of integer sequences International Class(es): 041- Primary Class U.S Class(es): 100,101,107 Class Status: ACTIVE Basis: 1(a) First Use: Dec. 31, 1996 Use in Commerce: Dec. 31, 1996. You can contact The OEIS Foundation, Inc. from anywhere in the world by phone or email, which you will find on our service. Trademarks presented to you have been re-registered at different times. Key Publication Dates - Jun. 16, 2010.