3484991

Information

• Patent Grant
• 3484991

• References
• Source

• Patent Number

  3,484,991

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1969
  56 years ago

• CPC

  • E05F3/06 - in which a torsion spring rotates a member around an axis perpendicular to the axis of the piston
  • E05Y2900/132 - Doors

• US Classifications

  • 049 - Movable or removable closures
  • 092 - Expansible chamber devices