3729869

Information

• Patent Grant
• 3729869

• References
• Source

• Patent Number

  3,729,869

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1973
  51 years ago

• CPC

  • E06B3/16 - Hollow frames of special construction
  • E06B1/16 - Hollow frames
  • E06B7/2309 - with a hollow sealing part
  • E06B3/362 - Double winged doors or windows

• US Classifications

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