3916800

Information

• Patent Grant
• 3916800

• References
• Source

• Patent Number

  3,916,800

• Date Filed

  Not available

• Date Issued

  Tuesday, November 4, 1975
  49 years ago

• CPC

  • B65D90/10 - Manholes Inspection openings Covers therefor
  • Y10T292/237 - Screw-operating means

• US Classifications

  • 105 - Railway rolling stock
  • 114 - Ships
  • 292 - Closure fasteners