1721590

Information

• Patent Grant
• 1721590

• References
• Source

• Patent Number

  1,721,590

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1929
  95 years ago

• CPC

  • F01B25/00 - Regulating, controlling, or safety means
  • F01B2250/009 - Condensor pumps for steam engines

• US Classifications

  • 417 - Pumps
  • 237 - Heating systems