2205407

Information

• Patent Grant
• 2205407

• References
• Source

• Patent Number

  2,205,407

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1940
  84 years ago

• CPC

  • G04B37/082 - without special hermetic sealing pieces

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology