|
US925554A
|
|
Filter-leaf.
|
|
US923320A
|
|
Hose-reel.
|
|
US875687A
|
|
Filter-leaf.
|
|
US884560A
|
|
Stacker.
|
|
US884559A
|
|
Excavator.
|
|
US910986A
|
|
Apparatus for handling material.
|
|
US854626A
|
|
Excavator.
|
|
US866424A
|
|
Centrifugal filter.
|
|
US894873A
|
|
System of cleaning filters.
|
|
US845746A
|
|
Machine for cleaning covered filters.
|
|
US864151A
|
|
Manual scraping-machine.
|
|
US867003A
|
|
Manual scraping-machine.
|
|
US839542A
|
|
Manual distributing-machine.
|
|
US842850A
|
|
Distributing-machine for closed filters.
|
|
US840104A
|
|
Scraping-machine for closed filters.
|
|
US845745A
|
|
Transfer mechanism.
|
|
US873010A
|
|
Machine for cleaning filter-beds.
|
|
US830045A
|
|
Conveying system.
|
|
US845744A
|
|
Machine for cleansing filter-beds.
|
|
US763354A
|
|
Apparatus for removing material from the surface of filter-beds.
|
