Exhibit 4
Agreement To File Jointly
The undersigned hereby agrees as follows:
(i) Each of them is individually eligible to use the Schedule 13D to
which this Exhibit is attached, and such Schedule 13D if filed on behalf of each
of them; and
(ii) Each of them is responsible for the timely filing of such
Schedule 13D and any amendments thereto, and for the completeness and accuracy
of the information concerning such person contained therein; but none of them is
responsible for the completeness or accuracy of the information concerning the
other person making the filing, unless such person knows or has reason to
believe that such information is inaccurate.
(iii) This agreement may be signed in two or more counterparts, each
of which, when executed shall be deemed to be an original but all of which taken
together shall constitute one and the same instrument.
Dated: October 29, 1999
Asea Xxxxx Boveri Atkiengesellschaft
By: /s/ Xxxxxx Xxxxxxxxx
Name / Title: Xxxxxx Xxxxxxxxx, Senior Vice
President
By: /s/ Xxxxxxx Xxxxxxxx
Name / Title: Xxxxxxx Xxxxxxxx, Vice President
Asea Xxxxx Boveri Inc.
By: /s/ E. Xxxxx Xxxx
____________________________
Name / Title: E. Xxxxx Xxxx/Assistant General Counsel
ABB Group Ltd
By: /s/ Beat Xxxx
____________________________
Name / Title: Beat Xxxx, Senior Vice President
By: /s/ Xxxxxx Xxxxxx
____________________________
Name / Title: Xxxxxx Xxxxxx, Senior Vice President
