1921747

Information

• Patent Grant
• 1921747

• References
• Source

• Patent Number

  1,921,747

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • F04C2/077 - having toothed-gearing type drive

• US Classifications

  • 418 - Rotary expansible chamber devices