3818789

Information

• Patent Grant
• 3818789

• References
• Source

• Patent Number

  3,818,789

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • B26F1/02 - Perforating by punching
  • B26F1/0084 - specially adapted for perforating rubber
  • Y10T83/0424 - By stretching
  • Y10T83/323 - With means to stretch work temporarily
  • Y10T83/4567 - Including supplemental work-feed means
  • Y10T83/943 - Multiple punchings
  • Y10T83/9435 - Progressive cutting

• US Classifications

  • 083 - Cutting