IP Library
Patent Attorney

Donald T Black

Reg. No. 27999
Active
Not accepting new clients
Firm
Praxair, Inc.
Location
Danbury, CT 06810
Phone
203-837-2669
Registration Type
ATTORNEY
Roster
USPTO OED FY25
Search their patent cases → All cases at Praxair, Inc.
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.