2151033

Information

• Patent Grant
• 2151033

• References
• Source

• Patent Number

  2,151,033

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1939
  85 years ago

• CPC

  • E06B3/481 - Wings foldable in a zig-zag manner or bi-fold wings
  • E05D2015/268 - the wings being successively folded
  • Y10T16/35 - Panel hangers, travelers and/or tracks
  • Y10T16/3803 - Laminated
  • Y10T16/3831 - Swiveling
  • Y10T16/3837 - Wheel and guide roller

• US Classifications

  • 160 - Flexible or portable closure, partition, or panel
  • 016 - Miscellaneous hardware
  • 049 - Movable or removable closures
  • 181 - Acoustics