3587659

Information

• Patent Grant
• 3587659

• References
• Source

• Patent Number

  3,587,659

• Date Filed

  Not available

• Date Issued

  Monday, June 28, 1971
  54 years ago

• CPC

  • F16L9/08 - of concrete, cement, or asbestos cement, with or without reinforcement
  • B28B21/64 - Winding arrangements
  • Y10T29/49874 - Prestressing rod, filament or strand

• US Classifications

  • 138 - Pipes and tubular conduits
  • 029 - Metal working
  • 242 - Winding, tensioning, or guiding