PORTA-PRO
USPTO (United States) · Serial 72137397
- Status
- registered
- Status updated
- 15 September 1987
- Filing date
- 6 February 1962
- Registration date
- 9 April 1963
- Nice classification
- 26
- Owner
- STEWART-TRANS-LUX CORPORATION
- Owner country
- US
- Raw status code
- 900
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 72137397) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.