Patent Attorney
Harold Charles Knecht
Reg. No. 35576
Active
Not accepting new clients
Firm
3M Innovative Properties Company
3M Innovative Properties Company
Location
St Paul, MN 55133
St Paul, MN 55133
Phone
651-575-1056
651-575-1056
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.