916953

Information

• Patent Grant
• 916953

• References
• Source

• Patent Number

  916,953

• Date Filed

  Not available

• Date Issued

  Tuesday, March 30, 1909
  115 years ago

• CPC

  • G04B25/04 - Alarm clocks or watches with devices stimulating the skin
  • G04B21/005 - Periodical acoustic signalling arrangements
  • G04B47/063 - measuring physiological quantities

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 600 - Surgery