3140428

Information

• Patent Grant
• 3140428

• References
• Source

• Patent Number

  3,140,428

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1964
  60 years ago

• CPC

  • B41J9/26 - Means for operating hammers to effect impression
  • B41J9/44 - Control for hammer-impression mechanisms
  • H03K3/57 - the switching device being a semiconductor device
  • H03K17/16 - Modifications for eliminating interference voltages or currents
  • H03K17/18 - Modifications for indicating state of switch

• US Classifications

  • 361 - Electricity: electrical systems and devices