3341841

Information

• Patent Grant
• 3341841

• References
• Source

• Patent Number

  3,341,841

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1967
  57 years ago

• CPC

  • G04C21/28 - by closing a contact to put into action electro-acoustic means
  • G04C21/00 - Producing acoustic time signals by electrical means
  • G04C21/30 - with provision for a number of operations at different times
  • G08B3/10 - using electric transmission using electromagnetic transmission
  • H03B5/362 - the amplifier being a single transistor

• US Classifications

  • 340 - Communications: electrical
  • 331 - Oscillators
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology