DK33539C
(en )
1924-08-11
Termion amplifier for amplification of high frequency electric currents.
DK33595C
(en )
1924-09-01
Device for amplifying electrical alternating currents.
DK34865C
(en )
1925-08-17
Device at Circuits for Amplification of Electric Currents.
DK19610C
(en )
1914-12-14
Device for Amplification of Electrical Variations.
DK36054C
(en )
1926-05-31
Cascade connection of AC amplifiers.
DK18678C
(en )
1914-04-06
Audio Amplifier for Phones.
DK24948C
(en )
1919-09-01
Device for Amplifying Variable Electric Currents.
DK31878C
(en )
1923-06-18
Amplifier for Wireless Telegraphy.
FR528119A
(en )
1921-11-07
Low frequency amplifier
DK33071C
(en )
1924-04-14
Termion amplifier for special amplification of one or more specific wavelengths.
DK13043C
(en )
1910-03-14
Procedure for the Development of Electric Currents.
DK39464C
(en )
1928-11-12
Apparatus for controlling high frequency currents.
ES65686A1
(en )
1917-12-01
A selective amplifier of electric currents.
DK21244C
(en )
1916-05-29
Method for Producing Rapid Electrical Fluctuations of Direct Current.
AT75616B
(en )
1919-02-25
Multi-part high voltage porcelain insulator.
DK22728C
(en )
1917-12-31
Procedure for the manufacture of porcelain objects.
DK26003C
(en )
1920-05-25
Procedure for the Elimination of Magnium by Electrical Route.
DK17667C
(en )
1913-08-11
Procedure for Manufacturing Varnishes and Varnishes.
CH73026A
(en )
1916-08-01
Feed-through terminal
DK18940C
(en )
1914-06-22
Apparatus for the Reconstruction or Amplification of Electrical Variations.
CH55650A
(en )
1912-09-02
Removable wheelbarrow
DK15143C
(en )
1911-10-09
Procedure for Reproducing the Form of Solid Bodies.
DK18517C
(en )
1914-03-02
Procedure for the Production of Hydrogen Peroxide.
ES62910A1
(en )
1916-10-16
New class of skates.
DK14926C
(en )
1911-08-07
Procedure for Treating Tobacco.