|
US1634463A
|
|
Liquid trap and strainer
|
|
US1638201A
|
|
Continuous battery oil filter
|
|
US1552433A
|
|
Preheater for stills
|
|
US1604353A
|
|
Distilling apparatus for volatile liquids
|
|
US1529067A
|
|
Oil-distilling process
|
|
US1621725A
|
|
Filtering material and method of preparation thereof
|
|
US1394011A
|
|
Filter for gasolene-tanks
|
|
US1328046A
|
|
Unitary multistage filter apparatus
|
|
US1328045A
|
|
Multistage adjustable filtering apparatus
|
|
US1294463A
|
|
Upright multistage filter.
|
|
US1414465A
|
|
Distillation process
|
|
US1372880A
|
|
Distilling and purifying apparatus for volatile liquids
|
|
US1260262A
|
|
Primer.
|
|
US1256229A
|
|
Condenser.
|
|
US1262495A
|
|
Filter.
|
|
US1328044A
|
|
Hydrocarbon-filter
|
|
US1113342A
|
|
Filtering device.
|
|
US1008411A
|
|
Safety device for electrically-heated implements.
|
