|
US2405342A
|
|
Charging machine
|
|
US2397530A
|
|
Manipulator
|
|
US2314686A
|
|
Manipulator
|
|
US2345572A
|
|
Manipulator
|
|
US2156967A
|
|
Valve
|
|
US2023511A
|
|
Substance preparation and article of manufacture
|
|
US1866080A
|
|
Tuyere structure and method of changing the same
|
|
US1881169A
|
|
Manipulator
|
|
US1936660A
|
|
Hoisting bucket
|
|
US2079896A
|
|
Valve
|
|
US1930467A
|
|
Material handling apparatus
|
|
US1907730A
|
|
Valve
|
|
US1867349A
|
|
Valve
|
|
US1622902A
|
|
Material-handling apparatus
|
|
US1717549A
|
|
Grab bucket
|
|
US1828762A
|
|
Material handling apparatus
|
|
US1534838A
|
|
Blast-furnace tapping apparatus
|
|
US1460940A
|
|
Automatic replay and record shift for phonographs
|
|
US1363834A
|
|
Apparatus for charging and discharging crucible-furnaces
|
|
US1389238A
|
|
Charging apparatus for annealing-furnaces
|
