2973644

Information

• Patent Grant
• 2973644

• References
• Source

• Patent Number

  2,973,644

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1961
  64 years ago

• CPC

  • F15B15/10 - the motor being of diaphragm type
  • Y10T74/19395 - Keys simultaneously slidable

• US Classifications

  • 092 - Expansible chamber devices
  • 074 - Machine element or mechanism