Common Contracts

EXHIBIT 4.5

Letter Agreement • March 20th, 2002 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances • New York

• Contract Type
  Letter Agreement
• Filed
  March 20th, 2002
• Company
  Matritech Inc/De/
• Industry
  In vitro & in vivo diagnostic substances
• Jurisdiction
  New York

May 21, 1997

Letter Agreement • June 6th, 1997 • Watson General Corp • Hazardous waste management • New York

• Contract Type
  Letter Agreement
• Filed
  June 6th, 1997
• Company
  Watson General Corp
• Industry
  Hazardous waste management
• Jurisdiction
  New York

CAMERON & ASSOCIATES 424 MADISON AVENUE FIFTH FLOOR NEW YORK, NY 10017 November 21,1996

Letter Agreement • April 15th, 1997 • Waste Recovery Inc • Refuse systems • New York

• Contract Type
  Letter Agreement
• Filed
  April 15th, 1997
• Company
  Waste Recovery Inc
• Industry
  Refuse systems
• Jurisdiction
  New York