|
US3831661A
|
|
Assembly gauge for curved rod rack frame construction
|
|
US3839007A
|
|
Method of fertilization with slow release phosphate particles
|
|
US3825241A
|
|
Apparatus for introducing gas to hot metal in a bottom pour vessel
|
|
US3834551A
|
|
Control for crane hoist having a lift ram
|
|
US3820770A
|
|
Sub hearth construction for metallurgical furnaces
|
|
US3853538A
|
|
Use of reducing gas by coal gasification for direct iron ore reduction
|
|
US3845936A
|
|
Modular crash cushion
|
|
US3840803A
|
|
Apparatus for locating a high resistance insulation fault in a metallic covered cable
|
|
US3829960A
|
|
Method of making a removable bottom for a steelmaking furnace from preformed refractory shapes
|
|
US3839013A
|
|
Copper recovery from lean sulfide ores
|
|
US3830480A
|
|
Probe assembly
|
|
US3839256A
|
|
Silicate-resin coating composition
|
|
US3800975A
|
|
Flexible seal for a vapor cavity
|
|
US3798940A
|
|
Rolling mill control system
|
|
US3812935A
|
|
Disc brake wear take up device
|
|
US3801058A
|
|
Apparatus for forming a refractory nozzle body
|
|
US3814613A
|
|
Coke-oven patching material
|
|
US3791595A
|
|
Method for processing iron ore concentrates
|
|
US3820947A
|
|
Insulation for water cooled pipes in a reheating furnace
|
|
US3823599A
|
|
Test apparatus for the evaluation of rolling lubricants
|
