3809968

Information

• Patent Grant
• 3809968

• References
• Source

• Patent Number

  3,809,968

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • G03B15/0447 - Energy sources; Batteries; Capacitors

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 250 - Radiant energy
  • 307 - Electrical transmission or interconnection systems
  • 396 - Photography