![](ANDERSON_ico.gif)
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W.A. Anderson
Low
Frequency Amplifier
1946
|
![](ARTZ_ico.gif)
|
M. Artzt
Balanced
Direct and Alternating Current Amplifiers
1940
|
![](BERESKIN_ico.gif)
|
A.B. Bereskin
Audio
Transformer
1954
|
![](NOWMANN_ico.gif)
|
J.R. Bowman
Amplifier
1940
|
![](CLEMENTS_ico.gif)
|
R.P. Clements
Direct
Coupled FeedBack Amplifier
1954
|
![](COULTER_ico.gif)
|
W.H. Coulter
Amplifier
having series connected output tubes
1952
|
![](DE_FOREST_ico.gif)
|
L. de Forest
Device
for amplifying feeble electrical currents
1907
|
![](DRAKE_ico.gif)
|
F.H. Drake
Electrical
circuit and transformer therefor
1928
|
![](FARBER_ico.gif)
|
M. Farber
Single
Tube Amplifier with transformer output
1954
|
![](FLEMING_ico.gif)
|
J.A. Fleming
Instrument
for converting alternating electric currents into continous current
1905
|
![](FUTTERNAM_ico.gif)
|
J. Futternam
Amplifier
1953
|
![](HAFLER_ico.gif)
|
D. Hafler
Transformers
1955
|
![](HALL_ico.gif)
|
C.T. Hall
Direct
Coupled power amplifiers
1950
|
![](HEBER_ico.gif)
|
Haber
Wideband
audio transformer
1999
|
![](HOLDEN_ico.gif)
|
W.H.T. Holden
Amplifying
system
1931
|
![](KETCH_ico.gif)
|
R.W. Ketchledge
Distortionless
feedback amplifier
1952
|
![](KOCH_ico.gif)
|
W.R. Koch
Power Output
Amplifier Circuit
1943
|
![](khron_ico.gif)
|
E.H. Krohn
Power
Amplifier
1958
|
![](larsen5_ico.gif)
|
Larsen
Single
Ended Transformer Coupled Audio Amplifier
1995
|
![](mansfo15_ico.gif)
|
H.L. Mansford
Amplifier
Circuits
1947
|
![](mcapli7_ico.gif)
|
W.W. Macalpine
Distortionless
Transmission System
1932
|
![](mcmill10_ico.gif)
|
B. McMillan
Multiple-FeedBack
Systems
1951
|
![](Mcinto16_ico.gif)
|
F.H. McIntosh
WideBand
Amplifier
1949
|
![](merhau22_ico.gif)
|
J. Merhaut
Parallel
assembly of amplifiers
1951
|
![](moore.25_ico.gif)
|
O.V. Mitchell
Thermionic
Tube Circuit
1943
|
![](owen.h26_ico.gif)
|
R.C. Moore
Vacuum Tube
Amplifier
1949
|
![](peralm28_ico.gif)
|
A.R. Pearlmann
Balanced
Amplifier
1955
|
![](peters29_ico.gif)
|
A.P.G. Peterson
Distortionless
audio amplifier
1951
|
![](rich.h34_ico.gif)
|
T.A. Rich
Feed-Back
Circuit
1951
|
![](rozenb35_ico.gif)
|
Rozenblit
Transformerless
output vacuum tube audio amplifier
1997
|
![](saunde39_ico.gif)
|
N.B. Saunders
Signal
transducer with distortion compensation amplifier
1946
|
![](scantl40_ico.gif)
|
G.S.P. Scantlebury
Thermionic
Valve Amplifier circuit arrangement
1944
|
![](seidel41_ico.gif)
|
H. Seidel
Feed
Forward Amplifier
1967
|
![](sohn.h51_ico.gif)
|
Sohn
Low
frequency transformer
1984
|
![](soller52_ico.gif)
|
W. Soller
Electron
tube amplification system
1934
|
![](stodol53_ico.gif)
|
E.K. Stodola
Electron
tube power output circuit
1945
|
![](vilkom54_ico.gif)
|
B.S. Vilkomerson
Multiple
load amplification syatem
1949
|
![](white.55_ico.gif)
|
E.L.C. White
Thermionic
valve amplifier circuit arrangement
1943
|
![](yamada56_ico.gif)
|
Yamada
Vacuum
tube audio amplifying circuit
1999
|
![](yamasi63_ico.gif)
|
Yamasita
Tube
amplifier having special configuration with two or more tubes
1999
|