D
USPTO (United States) · Serial 74209062
- Status
- registered
- Status updated
- 4 December 2023
- Filing date
- 30 September 1991
- Registration date
- 8 December 1992
- Nice classification
- 6, 11, 12, 14, 16, 18, 20, 21, 24, 25, 27, 28
- Owner
- Duke University
- Owner country
- US
- Raw status code
- 800
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 74209062) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.