3709188

Information

• Patent Grant
• 3709188

• References
• Source

• Patent Number

  3,709,188

• Date Filed

  Not available

• Date Issued

  Tuesday, January 9, 1973
  51 years ago

• CPC

  • G01C15/06 - Surveyors' staffs Movable markers
  • E01F9/677 - the sign posts being removable without tools
  • E01F9/685 - Subsoil means
  • Y10S411/922 - Nail, spike or tack having locking device
  • Y10S411/969 - Deformable retainer

• US Classifications

  • 052 - Static structures
  • 116 - Signals and indicators
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener