NL1747C
(en )
1917-01-02
Device for amplifying vibrations or converting mechanical into electrical vibrations and vice versa
NL1481C
(en )
1917-03-15
Device for preparing and injecting gases
NL1166C
(en )
1916-02-17
Device for opening and closing the windows of carriages
NL1043C
(en )
1916-01-15
Method and device for freezing water-containing soils
NL1385C
(en )
1916-07-01
Method of processing waste and garbage
NL352C
(en )
1914-10-01
Telephone with amplification of the received sound
CH59553A
(en )
1913-05-16
Cutable point setting device for trams and small railways
NL875C
(en )
1915-11-01
Improvement of a method of removing water from peat and the like
NL1195C
(en )
1916-04-01
Improvement of the method for briquetting solid and liquid fuels without further admixtures
NL764C
(en )
1915-08-02
Procedure for obtaining nitrogen in addition to nitrogen oxides
NL1716C
(en )
1916-11-15
Method of processing peat
NL732C
(en )
1915-07-01
Clamping device against rail creep
CH54446A
(en )
1912-05-17
Enclosure made of artificial stone
NL1748C
(en )
1917-01-02
Device for self-printing cards with an inscription of your choice
FR445527A
(en )
1912-11-13
Improvements to mechanical furnaces
FR499163A
(en )
1920-02-03
Improvements to vices and similar devices
FR473342A
(en )
1915-01-08
Reproducer and electric amplifier for sound vibrations
NL329C
(en )
1914-10-01
Method of separating fiber and its admixtures or contaminants
NL162254C
(en )
1900-01-01
SEMI-CONDUCTOR DEVICE FOR CONVERSION OF MECHANICAL VOLTAGES INTO ELECTRICAL SIGNALS AND METHOD OF MANUFACTURING THIS.
CH62291A
(en )
1913-11-17
Mechanical loading device on boiler furnaces
NL1267C
(en )
1916-05-01
Method of powering explosion engines
CA146912A
(en )
1913-03-25
Device for reducing the proportion of nitrogen in air
CH59108A
(en )
1913-04-16
Furnace loading device for locomotives
CH64034A
(en )
1914-03-02
New to gramophones and phonographs
NL607C
(en )
1915-04-15
Device for cooling or heating liquids