309050

Information

• Patent Grant
• 309050

• References
• Source

• Patent Number

  309,050

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1884
  140 years ago

• CPC

  • G01K5/225 - with means for indicating a maximum
  • Y10S65/09 - Tube

• US Classifications

  • 374 - Thermal measuring and testing
  • 065 - Glass manufacturing