1722969

Information

• Patent Grant
• 1722969

• References
• Source

• Patent Number

  1,722,969

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1929
  95 years ago

• CPC

  • G04B37/087 - Protection of wrist or pocket watch cases against dust

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology