DUOFONE
USPTO (United States) · Serial 73101700
- Status
- registered
- Status updated
- 2 February 1999
- Filing date
- 30 September 1976
- Registration date
- 25 April 1978
- Nice classification
- 9
- Owner
- TANDY CORPORATION
- Owner country
- US
- Raw status code
- 900
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 73101700) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.