CSU
USPTO (United States) · Serial 73150123
- Status
- cancelled
- Status updated
- 28 April 2001
- Filing date
- 28 November 1977
- Registration date
- 1 April 1980
- Nice classification
- 42
- Owner
- SCHLUMBERGER LIMITED
- Owner country
- AN
- Raw status code
- 710
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 73150123) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.