EXHIBIT 4
August 4, 1997
Dear Stockholder:
By now you should have received the Offer to Purchase dated July 29, 1997
relating to the offer (the "Offer") of NPB Acquisition Corp., a Delaware
corporation ("Merger Sub") and wholly-owned subsidiary of Mallinckrodt Inc., a
New York corporation ("Purchaser"), to purchase all of the outstanding shares
of Common Stock, par value $.001 per share, of Nellcor Puritan Xxxxxxx
Incorporated, a Delaware corporation (the "Company"), including the associated
rights to purchase Series A Junior Participating Preferred Stock at a purchase
price of $28.50 per share, net to the seller in cash, upon the terms and
conditions set forth in such Offer to Purchase as amended from time to time.
You should have also received related materials including a Letter of
Transmittal for use in tendering your shares and a copy of the Company's
Solicitation/Recommendation Statement of Schedule 14D-9.
As set forth in the Offer to Purchase, any questions or requests for
assistance, or for additional copies of the Offer to Purchase and the Letter
of Transmittal, should not be directed to the Company. Instead, please address
all such question and requests directly to the Information Agent or the Dealer
Managers at the following telephone numbers and locations: Georgeson & Company
Inc., Wall Street Plaza, New York, New York 10005, telephone (banks and
brokers) (000) 000-0000, (all others) (000) 000-0000; and Xxxxxxx, Xxxxx &
Co., 00 Xxxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000, telephone (000) 000-0000.
Please note that the Offer is currently scheduled to expire at 12:00 O'CLOCK
MIDNIGHT NEW YORK CITY TIME ON MONDAY, AUGUST 25, 1997 unless the Offer is
extended as set forth in the Offer to Purchase, not on Tuesday, August 26th as
stated in the transmittal letter accompanying the Company's Schedule 14D-9.
Nellcor Puritan Xxxxxxx Incorporated
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