3811222

Information

• Patent Grant
• 3811222

• References
• Source

• Patent Number

  3,811,222

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • E06B3/02 - Wings made completely of glass
  • E06B3/7007 - Door leaves with curved
  • E06B3/80 - flexible
  • E06B3/90 - Revolving doors Cages or housings therefor
  • E05Y2900/132 - Doors

• US Classifications

  • 049 - Movable or removable closures