CH18770A
(en )
1900-03-15
Installation for the purification of carbonic acid
FR431006A
(en )
1911-10-30
Process for the manufacture of solutions of nitrogen anhydride in nitrogen acid monohydrate
CH16605A
(en )
1898-12-31
Installation for the purification of black water or sewage
FR2355E
(en )
1904-03-09
Process for the manufacture of phenylglycine-ortho-carbonic acid
FR605E
(en )
1903-02-16
Process for the manufacture of phenylglycine-ortho-carbonic acid
CH16820A
(en )
1899-02-28
An apparatus for the production of pure carbonic acid
CH19171A
(en )
1900-05-31
Installation for the distribution of sewage or other similar liquids
CH16484A
(en )
1898-12-15
Driving mechanism for velocipeds
FR457499A
(en )
1913-09-18
Process for water purification and sludge desiccation
CH74443A
(en )
1917-03-01
Process and plant for the concentration of sulfuric acid
FR2316E
(en )
1904-03-03
Installation for water purification
CH17747A
(en )
1899-08-15
Brake-regulator for watch mechanisms
FR349918A
(en )
1905-07-27
Decanter for industrial water purification
FR320771A
(en )
1902-12-19
Improved process for the manufacture of hydrochloric acid
FR459092A
(en )
1913-10-25
Process for the concentration of sulfuric acid
FI1123A
(en )
1899-12-21
Brevkuvert shores "Segment"
FR354831A
(en )
1905-10-14
Chamber for the manufacture of sulfuric acid
FR343903A
(en )
1904-10-19
Process for the production of carbonic acid
FR432431A
(en )
1911-12-06
Plant for the liquefaction of sulfurous acid
CH30008A
(en )
1904-10-31
Installation for purifying sewage and other waste water
CA73469A
(en )
1901-10-22
Purification of greasy water
FR474302A
(en )
1915-02-17
Devices for fixing the walls of lead chambers for sulfuric acid
CH19895A
(en )
1900-10-15
Installation for fixing nitrogen from the air
FI1038A
(en )
1899-08-03
Luftventilerings- och värmekamin "Effektiv"
FI1103A
(en )
1899-11-30
Dörrlås benämdt "Universallås"