KWK
USPTO (United States) · Serial 71400331
- Status
- registered
- Status updated
- 22 March 2018
- Filing date
- 1 December 1937
- Registration date
- 10 May 1938
- Nice classification
- 1
- Owner
- AMERICAN COLLOID CO.
- Owner country
- US
- Raw status code
- 800
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 71400331) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.