3928974

Information

• Patent Grant
• 3928974

• References
• Source

• Patent Number

  3,928,974

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1975
  49 years ago

• CPC

  • F25B9/14 - characterised by the cycle used
  • F02G1/0435 - the engine being of the free piston type
  • F02G2244/50 - Double acting piston machines
  • F02G2258/10 - ceramic
  • F25B2309/1401 - Ericsson or Ericcson cycles

• US Classifications

  • 060 - Power plants