DEMAND PROMISSORY NOTE
$250,000 March 27, 1997
LASERTECHNICS, INC., a Delaware corporation having its principal place of business in Carrollton, Texas
(the "Company"), for value received, hereby promises to pay to the order of Wolfensohn Associates L.P., a
Delaware limited partnership, or its transferees or assigns (the "Holder"), on demand, the principal sum of Two
Hundred and Fifty Thousand Dollars ($250,000) together with interest thereon from the date hereof at the rate of
twelve percent (12%) per annum (but in no event to exceed the maximum rate permitted under applicable
provisions of law). Interest shall be calculated on the basis of actual days elapsed and on a 360-day year, and
shall be payable on demand. If any portion of the principal amount of this Note or any accrued interest thereon
remains outstanding on December 31, 1997, then the entire principal amount of this Note and all accrued interest
thereon shall be and become immediately due and payable on such date.
The payment of principal and interest shall be made in such coin or currency of the United States of America as
at the time of payment shall be legal tender for the payment of public and private debts. Principal and interest on
this Note shall be paid by wire transfer of Federal funds in accordance with the written instructions of the Holder
or, in the absence of such instructions, by check mailed to the Holder at 590 Madison Avenue, 32nd Floor, New
York, New York 10022.
The Company hereby waives presentment for payment, demand for payment, notice of nonpayment, protest and
notice of protest.
This Note may be prepaid in whole or in part (in amounts not less than $50,000) at any time at the option of the
Company, without premium or penalty. If this Note is prepaid on or before December 31, 1997, then the
Company shall grant to the Holder the right and option to acquire, through December 31, 1997, the Common
Stock or other equity securities into which this Note would have been con