3911877

Information

• Patent Grant
• 3911877

• References
• Source

• Patent Number

  3,911,877

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • E21C31/12 - Component parts

• US Classifications

  • 123 - Internal-combustion engines
  • 418 - Rotary expansible chamber devices