Redeemable Class B Warrant Agreement Sample Contracts

Exhibit 4.2 AMENDMENT NO. 1 TO THE AMENDED AND RESTATED REDEEMABLE CLASS B WARRANT AGREEMENT

Redeemable Class B Warrant Agreement • October 18th, 2002 • Hypertension Diagnostics Inc /Mn • Surgical & medical instruments & apparatus

• Contract Type
  Redeemable Class B Warrant Agreement
• Filed
  October 18th, 2002
• Company
  Hypertension Diagnostics Inc /Mn
• Industry
  Surgical & medical instruments & apparatus

AMENDMENT NO. 2 TO THE REDEEMABLE CLASS B WARRANT AGREEMENT

Redeemable Class B Warrant Agreement • June 7th, 2002 • Hypertension Diagnostics Inc /Mn • Surgical & medical instruments & apparatus • Minnesota

• Contract Type
  Redeemable Class B Warrant Agreement
• Filed
  June 7th, 2002
• Company
  Hypertension Diagnostics Inc /Mn
• Industry
  Surgical & medical instruments & apparatus
• Jurisdiction
  Minnesota

This Amendment No. 2 to the Warrant Agreement is dated as of June 6, 2002 by and between Hypertension Diagnostics, Inc., a Minnesota corporation (the “Company”), and U.S. Bank, N.A. (formerly known as Firstar Bank, N.A.), as Warrant Agent (the “Warrant Agent”).