Patent Attorney
Donald J Ersler
Reg. No. 38753
Active
Not accepting new clients
Firm
Donald J. Ersler, S.C.
Donald J. Ersler, S.C.
Location
Elm Grove, WI 53005
Elm Grove, WI 53005
Phone
262-785-0160
262-785-0160
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.