2644997

Information

• Patent Grant
• 2644997

• References
• Source

• Patent Number

  2,644,997

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1953
  71 years ago

• CPC

  • E04G15/068 - for channels open towards the surface

• US Classifications

  • 249 - Static molds
  • 052 - Static structures