3706521

Information

• Patent Grant
• 3706521

• References
• Source

• Patent Number

  3,706,521

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1972
  52 years ago

• CPC

  • G03B15/0484 - Constructional details of the flash apparatus
  • F21K5/023 - Ignition devices in photo flash bulbs
  • F21K5/026 - using mechanical firing

• US Classifications

  • 431 - Combustion