1
EXHIBIT 10.20
AMENDMENT TO PROMISSORY NOTE
--------------------------------------------------------------------------------
This Amendment to Promissory Note is by and between Cell Robotics
International, Inc. ("Maker"), and Humagen Fertility Diagnostics, Inc. (the
"Holder"). Reference is hereby made to that certain Promissory Note dated
December 6, 1999 executed by Maker and payable to the order of Holder (as
amended, the "Note"). Effective as May 10, 2001, paragraph 3 of the Note is
hereby amended and restated in its entirety to read as follows:
"3. PAYMENT OF PRINCIPAL AND INTEREST
Subject to paragraphs 4 and 8 below, Maker shall pay the Principal
Amount and all accrued and unpaid interest on the Principal Amount (if any)
and all other indebtedness due under this Note on demand. Starting May 6,
2000, interest will accrue at a 6% (six-percent) annual rate."
Executed this 13th day of August, 2001, but effective for all purposes as
of the date first written above.
CELL ROBOTICS INTERNATIONAL, INC.
By: /s/ Xxxxxx X. Xxxxxxxx
-------------------------------------
Xxxxxx X. Xxxxxxxx, President and CEO
0000 Xxxxxxxxx Xxxxxxx XX
Xxxxxxxxxxx, Xxx Xxxxxx 00000
HUMAGEN FERTILITY DIAGNOSTICS, INC.
By: /s/ Xxxxx Xxxxxx
-------------------------------------
Xxxxx Xxxxxx, President and CEO
0000 Xxxxxxx Xxx, Xxxx 0
Xxxxxxxxxxxxxxx, Xxxxxxxx 00000
