1775915

Information

• Patent Grant
• 1775915

• References
• Source

• Patent Number

  1,775,915

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1930
  94 years ago

• CPC

  • G04B37/122 - used as a mirror

• US Classifications

  • 052 - Static structures
  • 040 - Card, picture, or sign exhibiting
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology