3775835

Information

• Patent Grant
• 3775835

• References
• Source

• Patent Number

  3,775,835

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1973
  51 years ago

• CPC

  • B23K11/084 - of helicoïdal seams
  • B21C37/124 - the tubes having a special shape
  • B21C37/185 - starting from sheet material

• US Classifications

  • 228 - Metal fusion bonding
  • 052 - Static structures
  • 138 - Pipes and tubular conduits