|
US1763940A
|
|
Metal joist and the manufacture thereof
|
|
US1763943A
|
|
Metal joist and the manufacture thereof
|
|
US1764285A
|
|
Shearing machine
|
|
US1691264A
|
|
Work-feeding mechanism for shearing machines
|
|
US1696833A
|
|
Rolled truss metal shape and method of producing same
|
|
DE430190C
|
|
Machine for slitting metal parts, carriers, etc. like
|
|
GB128810A
|
|
Improvements in Shearing Machines.
|
|
US1455062A
|
|
Automatic hydraulic control valve for expanding machines
|
|
GB122763A
|
|
Improvements in Methods of Shearing Metals.
|
|
GB122021A
|
|
Improvements in Machines for Straightening Structural Members.
|
|
GB118379A
|
|
Improvements in Rotary Shears for Cutting Metal.
|
|
GB121377A
|
|
Improvements in Expanding Machines.
|
|
US1465408A
|
|
Machine for straightening structural members
|
|
US1286203A
|
|
Shearing-machine.
|
|
US1260857A
|
|
Expanding-machine.
|
|
US1328809A
|
|
Discharging mechanism
|
|
US1200453A
|
|
Metallic pole.
|
|
US1268080A
|
|
Heating-furnace.
|
|
US1272890A
|
|
Method of shearing metals.
|
|
US1272891A
|
|
Rotary shears.
|
