1646754

Information

• Patent Grant
• 1646754

• References
• Source

• Patent Number

  1,646,754

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1927
  97 years ago

• CPC

  • F04B37/16 - Means for nullifying unswept space

• US Classifications

  • 417 - Pumps
  • 092 - Expansible chamber devices