3869839

Information

• Patent Grant
• 3869839

• References
• Source

• Patent Number

  3,869,839

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1975
  50 years ago

• CPC

  • E06B3/44 - Vertically-sliding wings
  • E06B1/6069 - Separate spacer means acting exclusively in the plane of the opening; Shims; Wedges; Tightening of a complete frame inside a wall opening
  • E06B2003/4446 - Wood
  • E06B2003/4453 - Metal
  • E06B2003/4461 - Plastics

• US Classifications

  • 052 - Static structures
  • 049 - Movable or removable closures