3921555

Information

• Patent Grant
• 3921555

• References
• Source

• Patent Number

  3,921,555

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • E04H7/14 - ball-shaped
  • Y10T29/49883 - Ribbing
  • Y10T29/49904 - Assembling a subassembly, then assembling with a second subassembly

• US Classifications

  • 029 - Metal working
  • 052 - Static structures
  • 228 - Metal fusion bonding