3903594

Information

• Patent Grant
• 3903594

• References
• Source

• Patent Number

  3,903,594

• Date Filed

  Not available

• Date Issued

  Tuesday, September 9, 1975
  49 years ago

• CPC

  • B41J2/40 - providing current or voltage to the multi-stylus head
  • B41J2/395 - Structure of multi-stylus heads
  • Y10T29/49124 - On flat or curved insulated base, e.g., printed circuit, etc.
  • Y10T29/49165 - by forming conductive walled aperture in base
  • Y10T29/4957 - Sound device making

• US Classifications

  • 029 - Metal working
  • 174 - Electricity: conductors and insulators
  • 346 - Recorders
  • 347 - Incremental printing of symbolic information
  • 369 - Dynamic information storage or retrieval