1520975

Information

• Patent Grant
• 1520975

• References
• Source

• Patent Number

  1,520,975

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1924
  100 years ago

• CPC

  • E05B67/28 - Padlocks with shackles forming a circle
  • Y10T70/409 - Shackles
  • Y10T70/457 - Arcuate locus
  • Y10T70/489 - Housings
  • Y10T70/7497 - Tumblerless warded

• US Classifications

  • 070 - Locks