3878898

Information

• Patent Grant
• 3878898

• References
• Source

• Patent Number

  3,878,898

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1975
  49 years ago

• CPC

  • A62C35/605 - operating and sounding alarm automatically
  • G01K3/12 - based upon expansion or contraction of materials
  • G08B17/04 - Hydraulic or pneumatic actuation of the alarm

• US Classifications

  • 169 - Fire extinguishers
  • 374 - Thermal measuring and testing