CH71889A
(en )
1916-03-01
Process for the production of white cement
FR459292A
(en )
1913-10-31
Manufacturing process of pipe fittings
FR19807E
(en )
1915-10-01
Process for the manufacture of white cement
FR19808E
(en )
1915-10-01
Process for the manufacture of white cement
FR468527A
(en )
1914-07-08
Process for the manufacture of white cement
FR507082A
(en )
1920-09-04
Machine for the production of cement pipes
FR467076A
(en )
1914-06-03
Process for the production of formaldehyde
FR392734A
(en )
1908-12-03
Process for the manufacture of cement
FR456740A
(en )
1913-09-03
Process for the production of cement objects
FR457876A
(en )
1913-09-27
Process for the production of lime in pieces
FR461359A
(en )
1913-12-27
Process for the production of lime in pieces
FR514318A
(en )
1921-03-08
Process for the manufacture of dyeing dyeing materials or raw materials therefor
CH73266A
(en )
1916-09-16
Process for the simultaneous manufacture of cement and soda
FR352439A
(en )
1905-08-10
Process for the manufacture of cement pipes
FR478585A
(en )
1915-12-22
Portland cement manufacturing process
FR469359A
(en )
1914-07-30
Process for the production of tanning materials
FR331514A
(en )
1903-09-17
Process for the manufacture of cement
CH73073A
(en )
1916-08-01
Process for the manufacture of cement and asbestos slabs
FR471327A
(en )
1914-10-23
Process for the manufacture of barrels
FR457069A
(en )
1913-09-11
Process for the production of pyrography
FR490898A
(en )
1919-05-13
Process and machine for the manufacture of reinforced cement blocks
FR465552A
(en )
1914-04-20
Mold for the manufacture of compressed cement tiles
FR443833A
(en )
1912-10-03
Process for the manufacture of hollow bricks
FR484149A
(en )
1917-09-07
Process for the manufacture of oxylignin or oxylignone starting from the corresponding sulfonates
FR339499A
(en )
1904-06-10
Process for the manufacture of white cement