DUOFRAC
USPTO (United States) · Serial 72195075
- Status
- registered
- Status updated
- 31 July 2015
- Filing date
- 8 June 1964
- Registration date
- 13 July 1965
- Nice classification
- 6
- Owner
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Owner country
- US
- Raw status code
- 800
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 72195075) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.