3646052

Information

• Patent Grant
• 3646052

• References
• Source

• Patent Number

  3,646,052

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  52 years ago

• CPC

  • F04B43/04 - Pumps having electric drive
  • F04B43/0036 - the flexible member being formed as an O-ring
  • F04B53/1065 - fixed at its centre
  • F04B53/109 - inlet and outlet valve forming one unit
  • H02K33/04 - wherein the frequency of operation is determined by the frequency of uninterrupted ac energisation

• US Classifications

  • 548 - Organic compounds
  • 252 - Compositions
  • 534 - Organic compounds
  • 544 - Organic compounds
  • 549 - Organic compounds