Patent Assignment
Reel/Frame 007130/0895
Assignment of Assignor's Interest
Recorded: 1994-09-01
Pages: 3
Assignor
PFIFFNER, MICHAEL
Executed: 1994-04-08
Assignee
ABB MANAGEMENT AG
5401 BADEN, SWITZERLAND
Covered Property
(1)
Method for Detecting Ground Faults on the Conductors of an Electrical Machine
Patent:
5,739,693 →
Application:
08/299,301 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 30, 1996
From: ABB MANAGEMENT AG
To: ASEA BROWN BOVERI AG
Reel/Frame 008284/0498 →
Change of Name
Jun 11, 2002
From: ASEA BROWN BOVERI AG
To: ABB SCHWEIZ HOLDING AG
Reel/Frame 012973/0899 →
Assignment of Assignor's Interest
Dec 9, 2004
From: ABB SCHWEIZ HOLDING AG
To: ABB SCHWEIZ AG
Reel/Frame 015442/0685 →