3480200

Information

• Patent Grant
• 3480200

• References
• Source

• Patent Number

  3,480,200

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1969
  55 years ago

• CPC

  • F04B37/14 - to obtain high vacuum
  • F04F9/04 - in combination with fore pumps

• US Classifications

  • 417 - Pumps
  • 091 - Motors: expansible chamber type
  • 092 - Expansible chamber devices