PROM-BLOCK
USPTO (United States) · Serial 72437376
- Status
- registered
- Status updated
- 26 December 1995
- Filing date
- 2 October 1972
- Registration date
- 25 March 1975
- Nice classification
- 26
- Owner
- HOUSTON ENGINEERING RESEARCH CORPORATION
- Owner country
- US
- Raw status code
- 900
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 72437376) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.