1328752

Information

• Patent Grant
• 1328752

• References
• Source

• Patent Number

  1,328,752

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1920
  104 years ago

• CPC

  • E02B7/30 - with guide wheels or rollers for the gates
  • E02B9/022 - Closures
  • Y02E10/22 - Conventional

• US Classifications

  • 251 - Valves and valve actuation