CH50464A
(en )
1911-06-01
Hollow building block and method of making the same
CH53675A
(en )
1912-03-16
Method of manufacturing telephones
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
CH47857A
(en )
1910-08-16
Process for producing the winding of short-circuit armatures
CH48045A
(en )
1910-09-01
Process for the production of hollow ceilings
CH56308A
(en )
1912-11-01
Process for the production of quartz hollow bodies
CH50322A
(en )
1911-05-16
Method of manufacturing grooved rail frogs
CH52365A
(en )
1911-11-16
Building block for the production of hollow masonry
CH49852A
(en )
1911-04-01
Method of making an imitation marble
CH47226A
(en )
1910-06-16
Method of making an imitation marble
CH68285A
(en )
1915-03-01
Process for the production of hollow components from concrete
CH55315A
(en )
1912-08-01
Process for the production of road surfaces
CH54001A
(en )
1912-04-16
Method of manufacturing U-shaped tubes
CH54791A
(en )
1912-06-17
Method of making ceilings with iron inlays
CH55452A
(en )
1912-08-16
Method of making bells
CH53335A
(en )
1912-02-01
Process for the production of hydroquinine
CH56981A
(en )
1912-12-02
Method of making vaults
CH65476A
(en )
1914-06-16
Method of making blankets
CH66091A
(en )
1914-08-17
Process for the production of hollow, metal cutlery handles
CH52279A
(en )
1911-11-01
Process for the production of tannin extracts
CH52115A
(en )
1911-11-01
Process for the production of celluloid-like masses
CH77801A
(en )
1918-06-01
Method of making caramel
CH49731A
(en )
1911-03-16
Process for the production of shaped pieces for building purposes
CH51068A
(en )
1911-07-17
Process for the production of artificial stone slabs
CH50173A
(en )
1911-05-01
Process for the production of artificial stone slabs