2254649

Information

• Patent Grant
• 2254649

• References
• Source

• Patent Number

  2,254,649

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1941
  83 years ago

• CPC

  • G04D7/1221 - with recording

• US Classifications

  • 073 - Measuring and testing
  • 346 - Recorders
  • 968 - Horology