|
US1523657A
|
|
Setting for stills and for similar purposes
|
|
US1526605A
|
|
Heat-exchanging apparatus
|
|
GB186849A
|
|
Improvements relating to settings for stills and for similar purposes
|
|
US1594209A
|
|
Still and method of distilling
|
|
GB184222A
|
|
Improvements relating to condensers, preheaters, heat-exchangers and the like
|
|
GB182827A
|
|
Improvements relating to the fractional distillation of crude oil and other liquids
|
|
GB182828A
|
|
Improvements in apparatus for distilling crude oil and other liquids
|
|
GB175666A
|
|
Improvements relating to stills
|
|
US1471855A
|
|
Relief valve for tanks or receptacles
|
