3305991

Information

• Patent Grant
• 3305991

• References
• Source

• Patent Number

  3,305,991

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1967
  57 years ago

• CPC

  • B29C44/32 - Incorporating or moulding on preformed parts
  • E04B7/225 - the slabs having non-structural supports for roofing materials
  • E04C2/044 - of concrete
  • E04C2/205 - of foamed plastics, or of plastics and foamed plastics, optionally reinforced
  • E04C2/22 - reinforced
  • E04C2002/045 - with two parallel leaves connected by tie anchors

• US Classifications

  • 052 - Static structures
  • 140 - Wireworking
  • 264 - Plastic and nonmetallic article shaping or treating: processes