Exhibit 4.2 AGREEMENT FOR SALE OF SHARES OF COMMON STOCK THIS SGREEMENT FOR SALE OF SHARES OF COMMON STOCK (hereinafter referred to as the "Agreement") is made and entered into this 23rd day of February, 2000, by and between Pollution Research and...Agreement for Sale of Shares of Common Stock • March 23rd, 2000 • Pollution Research & Control Corp /Ca/ • Industrial instruments for measurement, display, and control • California
ARTICLE II AGREEMENT SUBJECT TO PROMISSORY NOTEAgreement for Sale of Shares of Common Stock • October 25th, 2000 • Pollution Research & Control Corp /Ca/ • Industrial instruments for measurement, display, and control • California
