1943978

Information

• Patent Grant
• 1943978

• References
• Source

• Patent Number

  1,943,978

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1934
  91 years ago

• CPC

  • B21D53/883 - reflectors

• US Classifications

  • 072 - Metal deforming
  • 359 - Optical: systems and elements