2730840

Information

• Patent Grant
• 2730840

• References
• Source

• Patent Number

  2,730,840

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1956
  68 years ago

• CPC

  • B61L5/1845 - Optical systems, lenses
  • Y10T29/49892 - Joining plate edge perpendicularly to frame

• US Classifications

  • 029 - Metal working
  • 065 - Glass manufacturing