Membership
Tour
Register
Log in
Richard O. Haarstad
Follow
Person
New Brighton, MN, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Secondary flow fluid filter
Patent number
4,496,460
Issue date
Jan 29, 1985
Hydraulic Specialty Company
Richard O. Haarstad
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL