1990478

Information

• Patent Grant
• 1990478

• References
• Source

• Patent Number

  1,990,478

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  90 years ago

• CPC

  • B21J7/40 - driven by hydraulic or liquid pressure
  • B21J7/34 - operating both the hammer and the anvil, so-called counter-tup
  • B21J7/46 - Control devices specially adapted to forging hammers, not restricted to one of the preceding sub-groups

• US Classifications

  • 072 - Metal deforming