PERC
USPTO (United States) · Serial 73156936
- Status
- cancelled
- Status updated
- 12 May 1987
- Filing date
- 30 January 1978
- Registration date
- 30 December 1980
- Nice classification
- 10
- Owner
- National Patent Development Corporation
- Owner country
- US
- Raw status code
- 710
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 73156936) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.