Class B21J : FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES
Subclass 7/06: Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features section H) Special design or construction Drop hammers
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10960459 | Method of manufacturing a drum of an axial piston machine | Dec 03, 18 | Mar 30, 21 | Liebherr Machines Bulle SA |
| 7237706 | Drop hammer | Jan 26, 05 | Jul 03, 07 | CLARK EQUIPMENT COMPANY |
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