CH53675A
(en )
1912-03-16
Method of manufacturing telephones
CH56981A
(en )
1912-12-02
Method of making vaults
CH53335A
(en )
1912-02-01
Process for the production of hydroquinine
CH54092A
(en )
1912-05-01
process for the manufacture of fire starters
CH62289A
(en )
1913-11-17
Method of making briquettes
CH62147A
(en )
1913-11-01
Method of making table set
CH55452A
(en )
1912-08-16
Method of making bells
CH54791A
(en )
1912-06-17
Method of making ceilings with iron inlays
CH57230A
(en )
1913-01-02
Method of making briquettes
CH50536A
(en )
1911-06-01
Process for the manufacture of filters
CH73900A
(en )
1916-12-01
Method of making briquettes
CH56237A
(en )
1912-10-16
Method of making wadding
CH50322A
(en )
1911-05-16
Method of manufacturing grooved rail frogs
CH65476A
(en )
1914-06-16
Method of making blankets
CH54686A
(en )
1912-06-01
Method for the representation of pinacon
CH55670A
(en )
1912-09-02
Method for the representation of pinacon
CH56841A
(en )
1912-11-16
Method for the representation of pinacon
CH56980A
(en )
1912-12-02
Method of making massive houses
CH77801A
(en )
1918-06-01
Method of making caramel
CH66971A
(en )
1914-10-16
Method of making briquettes
CH54001A
(en )
1912-04-16
Method of manufacturing U-shaped tubes
CH54174A
(en )
1912-05-01
Process for the manufacture of pliable electrolyte iron
CH51290A
(en )
1911-08-16
Process for the production of low-smoke gunpowder
CH49731A
(en )
1911-03-16
Process for the production of shaped pieces for building purposes
CH52279A
(en )
1911-11-01
Process for the production of tannin extracts