CH82209A
(en )
1919-09-01
Sewage treatment plant for liquids containing sink matter with automatic removal of the separated matter
CH79431A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
CH79432A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
CH79129A
(en )
1918-10-01
Sewage treatment plant for the process water of hydropower plants and other liquids containing sink matter
CH81445A
(en )
1919-06-16
Process for the evaporation of liquids
FR497420A
(en )
1919-12-05
Device for the manufacture of artificial threads
CH79651A
(en )
1918-12-16
Facility for the production of calcium carbide
CH75431A
(en )
1917-07-16
Device to prevent the overflow of boiling liquids
CH78758A
(en )
1918-09-02
System for heating liquids
FI6978A
(en )
1918-06-27
Automatic regulation for the purpose of regulation
CH78873A
(en )
1918-09-02
Agitator for cesspools
CH81665A
(en )
1919-07-01
water tap
CH80152A
(en )
1919-02-01
Cookware rack for tourist use
FI6940A
(en )
1918-01-24
For the benefit of the Member States
CH78655A
(en )
1918-08-16
Locking device for liquid containers
FR503464A
(en )
1920-06-11
Hub for idler pulleys
FR488433A
(en )
1918-10-08
Improvements to automatic water purifiers
DK23184C
(en )
1918-06-24
Centrifuge for Clearance of Liquids.
CH79708A
(en )
1919-01-02
Device for utilizing the energy of a flow
FR26067E
(en )
1923-07-30
Advanced tap
CH81503A
(en )
1919-06-16
water tap
CH81820A
(en )
1919-07-16
Tap for liquids and vapors
CH81444A
(en )
1919-06-16
Appart for evaporation of liquids
ES66652A1
(en )
1918-05-01
An extra fast liquid purification procedure.
CH79127A
(en )
1918-10-16
Device for locomotion of watercraft