EI ENGINEERING CONFERENCE INDEX
USPTO (United States) · Serial 73649199
- Status
- cancelled
- Status updated
- 25 April 1994
- Filing date
- 13 March 1987
- Registration date
- 20 October 1987
- Nice classification
- 16
- Owner
- ENGINEERING INFORMATION, INC.
- Owner country
- US
- Raw status code
- 710
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 73649199) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.