3489387

Information

• Patent Grant
• 3489387

• References
• Source

• Patent Number

  3,489,387

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  54 years ago

• CPC

  • E04C2/322 - with parallel corrugations
  • B28B1/528 - for producing corrugated sheets
  • E04C2/328 - slightly bowed or folded panels not otherwise provided for

• US Classifications

  • 249 - Static molds
  • 052 - Static structures
  • 264 - Plastic and nonmetallic article shaping or treating: processes