HARVARD
Filed: November 9, 1993
filters, filter housings, filter systems and components therefor, limited to use for metal working fluids, hydraulic fluids…
Owned by: Harvard Corporation
Serial Number: 74455964
CONSTANT CONTAMINATION CONTROL
Filed: November 9, 1993
fluid filters for metal working fluids, hydraulic fluids, synthetic-based fluids, water-based fluids, industrial waste water…
Owned by: Harvard Corporation
Serial Number: 74455965
H
Filed: November 9, 1993
fluid filters and housings therefor for domestic, commercial and industrial uses
Owned by: Harvard Corporation
Serial Number: 74461329
H
Filed: August 12, 2020
filters, namely oil filters, fuel filters, water-based lubricant filters for industrial machines, metal working fluid filters…
Owned by: Harvard Corporation
Serial Number: 90108643
