DUO-SITE
USPTO (United States) · Serial 71204274
- Status
- registered
- Status updated
- 10 January 1986
- Filing date
- 22 October 1924
- Registration date
- 4 August 1925
- Nice classification
- 26
- Owner
- OPTICAL SERVICE CORPORATION
- Owner country
- -
- Raw status code
- 900
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 71204274) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.