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DK540C
(en)
|
|
Filter for Treatment of Wastewater.
|
|
DK823C
(en)
|
|
Method for Preparation of Ozone Solutions.
|
|
DK560C
(en)
|
|
Apparatus for Treatment of Peat.
|
|
FR357318A
(en)
|
|
Purifier filter
|
|
DK422C
(en)
|
|
Procedure for Accelerating the Drying of Clay in Sludge Basins.
|
|
DK7893C
(en)
|
|
Procedure for Purification of Tantalum Metal.
|
|
DK5972C
(en)
|
|
Filter device at Containers for biological treatment of sewage water.
|
|
DK6737C
(en)
|
|
Of several Tubes composed Scraper for Filter Centrifuges.
|
|
DK5648C
(en)
|
|
Devices at Containers for Biological Purification of Sewage Water.
|
|
DK4114C
(en)
|
|
Grease Purification Procedure.
|
|
FR386541A
(en)
|
|
Purifier column for wastewater treatment
|
|
DK721C
(en)
|
|
Method for forming usable larger pieces of cork from cork waste.
|
|
DK361C
(en)
|
|
Apparatus for Purifying Food Water.
|
|
FR7319E
(en)
|
|
Wastewater purification
|
|
DK5095C
(en)
|
|
Septic Container for Treatment of Wastewater (Sewage).
|
|
DK640C
(en)
|
|
Water purifier.
|
|
DK405C
(en)
|
|
Procedure for Making Soap.
|
|
CH11775A
(en)
|
|
Asbestos filter
|
|
DK1976C
(en)
|
|
Filter for Purification of Wastewater and Other Impure Liquids by Bacterial Effect.
|
|
DK96736C
(en)
|
|
Process for the preparation of dihydroouabain.
|
|
DK6881C
(en)
|
|
Apparatus for Cleaning Sewage Wells.
|
|
DK895C
(en)
|
|
Procedure for the manufacture of Kojigær.
|
|
DK5646C
(en)
|
|
Grease Purification Procedure.
|
|
CH12740A
(en)
|
|
Beer filter
|
|
DK6738C
(en)
|
|
Spiral Scraper for Filter Centrifuges.
|