HYDRO-STONE
USPTO (United States) · Serial 71418798
- Status
- registered
- Status updated
- 21 October 2020
- Filing date
- 23 April 1939
- Registration date
- 26 December 1939
- Nice classification
- 12
- Owner
- UNITED STATES GYPSUM COMPANY
- Owner country
- US
- Raw status code
- 800
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 71418798) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.