CH40921A
(en )
1908-09-01
Rotary transformer for converting alternating current into direct current and vice versa
FR367298A
(en )
1906-10-25
Rotary transformer allowing the transformation of alternating current into direct current and reverse transformation
CH39517A
(en )
1908-03-16
AC to DC transformer
FR355945A
(en )
1905-11-16
Device for converting alternating currents into direct current
FR392691A
(en )
1908-12-02
Power transformer
CH39886A
(en )
1908-05-01
Electric transformer furnace
FR377273A
(en )
1907-09-03
Continuous diffuser-defecator for all applications
FR385499A
(en )
1908-05-13
Alternating current rotary converter
CH42791A
(en )
1909-03-01
Device for transforming polyphase alternating currents into direct current
FR469196A
(en )
1914-07-25
Transformer for converting alternating current into direct current
FR423166A
(en )
1911-04-10
High voltage current transformer
FR399536A
(en )
1909-06-30
Improvements to dynamotors or direct current converters
FR382549A
(en )
1908-02-10
Improvements to electrolytic alternating current transformers
FR381286A
(en )
1908-01-07
Period transformer for polyphase or single phase currents
FR388062A
(en )
1908-08-01
Automatic switch for direct or alternating current
CA107559A
(en )
1907-09-17
Electrical transformer
CH47856A
(en )
1910-08-16
Three-phase transformer
FR399028A
(en )
1909-06-21
Transformer for electro-medical applications
CH55624A
(en )
1912-09-02
Rotary assembly for converting alternating currents into direct current
FR401309A
(en )
1909-08-26
Electric current reducer
CH41056A
(en )
1908-09-16
DC transformer
CH42235A
(en )
1909-01-16
DC transformer
ES41241A1
(en )
1907-08-16
An electric transformer furnace.
CA115043A
(en )
1908-11-10
Induction generator
FR399778A
(en )
1909-07-07
Mains offset compensated transformer