2990746

Information

• Patent Grant
• 2990746

• References
• Source

• Patent Number

  2,990,746

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1961
  63 years ago

• CPC

  • F22B37/221 - Covers for drums, collectors, manholes or the like

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 220 - Receptacles