1909730

Information

• Patent Grant
• 1909730

• References
• Source

• Patent Number

  1,909,730

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1933
  91 years ago

• CPC

  • G05D16/0677 - using one membrane without spring
  • Y10T137/78 - Weight

• US Classifications

  • 137 - Fluid handling