3644702

Information

• Patent Grant
• 3644702

• References
• Source

• Patent Number

  3,644,702

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  52 years ago

• CPC

  • F04C27/02 - Liquid sealing for high-vacuum pumps or for compressors
  • C08F28/00 - Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
  • F04C2220/50 - Pumps with means for introducing gas under pressure for ballasting

• US Classifications

  • 219 - Electric heating
  • 418 - Rotary expansible chamber devices