|
US2391059A
|
|
Pontoon assembly and method of using the same
|
|
US2308090A
|
|
Variable speed friction transmission
|
|
US2224844A
|
|
Apparatus for protecting oil distribution means at harbors
|
|
US2125939A
|
|
Rotary shear knife
|
|
US2195653A
|
|
Rotary shearing apparatus
|
|
US2103859A
|
|
Building construction
|
|
US2228896A
|
|
Rotary flying billet shear
|
|
US2227789A
|
|
Rotary tin plate shears
|
|
US2274452A
|
|
High speed rotary flying shear
|
|
US1994107A
|
|
Synchronizing mechanism for rotary flying shears
|
|
US1965523A
|
|
Rotary flying shear
|
|
US1161493A
|
|
Cooling means for gas-engine cylinders.
|
|
US1045864A
|
|
Coke-oven door.
|
|
US1116346A
|
|
Fluid-pressure engine.
|
|
US844376A
|
|
Safety device for car-hauls.
|
|
US635050A
|
|
Draftsman's square.
|
|
CA201387A
|
|
Traction truck
|
