Certificate Filed in the Office of Secretary of State of Massacusetts Showing Change of Address Effective Feb.15.1980

Recorded: 1981-02-09 Pages: 3

Assignor

Executed: 1981-02-04

Assignee

FERROFLUIDICS CORPORATION

ONE BOSTON PLACE 19TH FL., BOSTON, MASSACHUSETTS, 02108

Covered Properties (3)

Magnetic Fluid Seals

Patent: 3,620,584 →

Application: 05/040,246 →

Ferro Fluid Compositions and Process of Making Same

Patent: 3,917,538 →

Application: 05/324,414 →

Ferrofluid Centrifugal Seal

Patent: 4,200,296 →

Application: 05/964,601 →

Related Assignments (1)

Other recorded transfers of the patents in this record — the chain of ownership.