3660880

Information

• Patent Grant
• 3660880

• References
• Source

• Patent Number

  3,660,880

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1972
  52 years ago

• CPC

  • B21D51/08 - ball-shaped objects
  • B21D53/10 - parts of bearings sleeves valve seats or the like
  • B21K1/02 - balls, rolls, or rollers
  • B23P15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • F16C33/32 - Balls
  • Y10T29/49714 - Hollow ball
  • Y10T29/49893 - Peripheral joining of opposed mirror image parts to form a hollow body
  • Y10T29/53109 - including deforming means

• US Classifications

  • 029 - Metal working