Patent Agent
Harold I Masteller
Reg. No. 34665
Active
Not accepting new clients
Location
Springboro, OH 45066
Springboro, OH 45066
Phone
937-885-7481
937-885-7481
Registration Type
AGENT
AGENT
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.