Prototype Defined Contribution Plan Sample Contracts

EXHIBIT 10.4 --------------------

Prototype Defined Contribution Plan • November 1st, 1996 • Aastrom Biosciences Inc

• Contract Type
  Prototype Defined Contribution Plan
• Filed
  November 1st, 1996
• Company
  Aastrom Biosciences Inc

SCUDDER TRUST COMPANY PROTOTYPE DEFINED CONTRIBUTION PLAN

Prototype Defined Contribution Plan • March 16th, 2005 • Clayton Williams Energy Inc /De • Crude petroleum & natural gas

• Contract Type
  Prototype Defined Contribution Plan
• Filed
  March 16th, 2005
• Company
  Clayton Williams Energy Inc /De
• Industry
  Crude petroleum & natural gas