1537390

Information

• Patent Grant
• 1537390

• References
• Source

• Patent Number

  1,537,390

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1925
  99 years ago

• CPC

  • A63H33/3066 - Watches or clocks
  • G04B23/00 - Arrangements producing acoustic signals at preselected times

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 033 - Geometrical instruments
  • 446 - Amusement devices: toys
  • 968 - Horology