1304612

Information

• Patent Grant
• 1304612

• References
• Source

• Patent Number

  1,304,612

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1919
  105 years ago

• CPC

  • E03C1/295 - using air-supply valves
  • Y10T137/3258 - Automatic valve in vent line

• US Classifications

  • 137 - Fluid handling
  • 285 - Pipe joints or couplings