2556391

Information

• Patent Grant
• 2556391

• References
• Source

• Patent Number

  2,556,391

• Date Filed

  Not available

• Date Issued

  Tuesday, June 12, 1951
  73 years ago

• CPC

  • B30B11/245 - using two or more screws working in different chambers
  • B28B3/22 - by screw or worm

• US Classifications

  • 198 - Conveyors: power-driven
  • 415 - Rotary kinetic fluid motors or pumps
  • 425 - Plastic article or earthenware shaping or treating: apparatus