2550894

Information

• Patent Grant
• 2550894

• References
• Source

• Patent Number

  2,550,894

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1951
  73 years ago

• CPC

  • D06H1/003 - by passing a needle through the layers

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes