Patent Attorney
John D Winkelman
Reg. No. 26523
Active
Not accepting new clients
Location
Beaverton, OR 97008
Beaverton, OR 97008
Phone
503-524-5822
503-524-5822
Registration Type
ATTORNEY
ATTORNEY
Roster
USPTO OED FY25
USPTO OED FY25
Firm and contact info reflects the FY25 roster (last updated September 25).
Attorneys may have changed firms since then — patent filings show their current firm of record.