3869902

Information

• Patent Grant
• 3869902

• References
• Source

• Patent Number

  3,869,902

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1975
  50 years ago

• CPC

  • B21C37/0822 - Guiding or aligning the edges of the bent sheet
  • B21C37/08 - Making tubes with welded or soldered seams
  • H01B13/262 - of an outer metallic screen

• US Classifications

  • 072 - Metal deforming