FR787386A
(en )
1935-09-21
Method and apparatus for the purification of heterogeneous liquid mixtures
CH189459A
(en )
1937-02-28
A method of profiling a shaped grinding wheel and apparatus for carrying out this method.
CH208153A
(en )
1940-01-15
Method and apparatus for the application of covering material on roads.
FR810912A
(en )
1937-04-02
Method and apparatus for the decomposition of ammonia
FR825906A
(en )
1938-03-17
Method and apparatus for hardening the running surface of a rail
FR807603A
(en )
1937-01-16
Auxiliary device for replacement of automobile wheels
FR779735A
(en )
1935-04-11
Method and apparatus for the production of ozone
FR798455A
(en )
1936-05-18
Method and device for the production of concrete road surfaces
FR799442A
(en )
1936-06-12
Method and apparatus for the production of fumes
FR843841A
(en )
1939-07-11
Method and apparatus for preparing epichlorohydrin
FR847686A
(en )
1939-10-13
Method and instrument for tooth extraction
FR796349A
(en )
1936-04-04
Method and apparatus for draining cars
FR757175A
(en )
1933-12-21
Method for indicating the degree of wear of tire treads
FR785677A
(en )
1935-08-16
Method and apparatus for hydraulic damping of vehicles
FR794477A
(en )
1936-02-18
Method and apparatus for water softening
FR779550A
(en )
1935-04-08
Method for determining the hardness of grinding wheels
FR820897A
(en )
1937-11-20
Method and apparatus for air purification
FR815102A
(en )
1937-07-06
Method and apparatus for the distillation of glycerin
FR812300A
(en )
1937-05-04
Method and apparatus for finishing toothed wheels
FR768326A
(en )
1934-08-03
Method and apparatus for water purification
FR730606A
(en )
1932-08-18
Method and apparatus for grinding gears
FR878096A
(en )
1943-01-11
Improved method and device for machining shaped grinding wheels
FR784286A
(en )
1935-07-22
Method and device for obtaining additional force on wheels lined with tires
FR805207A
(en )
1936-11-14
Method and apparatus for shaping the surface of a metal part
FR840962A
(en )
1939-05-08
Lubricant and process for obtaining it