3899911

Information

• Patent Grant
• 3899911

• References
• Source

• Patent Number

  3,899,911

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1975
  49 years ago

• CPC

  • B21D5/146 - one roll being covered with deformable material
  • Y10S72/702 - Overbending to compensate for springback

• US Classifications

  • 072 - Metal deforming