NL144803C
(hu)
*
|
1948-02-26 |
|
|
|
US2589658A
(en)
*
|
1948-06-17 |
1952-03-18 |
Bell Telephone Labor Inc |
Semiconductor amplifier and electrode structures therefor
|
US2569347A
(en)
*
|
1948-06-26 |
1951-09-25 |
Bell Telephone Labor Inc |
Circuit element utilizing semiconductive material
|
US2677793A
(en)
*
|
1948-07-20 |
1954-05-04 |
Sylvania Electric Prod |
Crystal amplifier
|
NL147713B
(nl)
*
|
1948-07-23 |
|
Laing & Son Ltd John |
Werkwijze voor het bereiden van een plastische mortel.
|
BE490438A
(hu)
*
|
1948-08-13 |
|
|
|
US2691750A
(en)
*
|
1948-08-14 |
1954-10-12 |
Bell Telephone Labor Inc |
Semiconductor amplifier
|
NL143914C
(hu)
*
|
1948-10-14 |
|
|
|
GB654909A
(en)
*
|
1948-10-27 |
1951-07-04 |
Standard Telephones Cables Ltd |
Improvements in or relating to electric delay devices employing semi-conductors
|
US2585078A
(en)
*
|
1948-11-06 |
1952-02-12 |
Bell Telephone Labor Inc |
Negative resistance device utilizing semiconductor amplifier
|
BE491203A
(hu)
*
|
1948-11-06 |
|
|
|
US2661448A
(en)
*
|
1948-12-20 |
1953-12-01 |
North American Aviation Inc |
Transfer resistor and method of making
|
US2609459A
(en)
*
|
1948-12-30 |
1952-09-02 |
Rca Corp |
High input impedance transistor amplifier
|
NL150840B
(nl)
*
|
1949-01-04 |
|
Basf Wyandotte Corp |
Werkwijze voor het verlenen van anti-statische eigenschappen aan uit de smelt gevormde polymeren, werkwijze voor het bereiden van een anti-statisch makend middel, alsmede uit de smelt gevormd polymeervoortbrengsel met anti-statische eigenschappen.
|
US2632146A
(en)
*
|
1949-01-13 |
1953-03-17 |
Bell Telephone Labor Inc |
Transistor frequency modulation
|
US2595496A
(en)
*
|
1949-01-22 |
1952-05-06 |
Rca Corp |
Cascade-connected semiconductor amplifier
|
US2553490A
(en)
*
|
1949-02-21 |
1951-05-15 |
Bell Telephone Labor Inc |
Magnetic control of semiconductor currents
|
US2660624A
(en)
*
|
1949-02-24 |
1953-11-24 |
Rca Corp |
High input impedance semiconductor amplifier
|
US2734102A
(en)
*
|
1949-03-31 |
1956-02-07 |
|
Jacques i |
NL152201C
(hu)
*
|
1949-03-31 |
|
|
|
US2770762A
(en)
*
|
1949-04-01 |
1956-11-13 |
Int Standard Electric Corp |
Crystal triodes
|
BE558880A
(hu)
*
|
1949-04-01 |
|
|
|
US2595232A
(en)
*
|
1949-04-29 |
1952-05-06 |
Bell Telephone Labor Inc |
Telephone switching system employing a transistor
|
US2675474A
(en)
*
|
1949-05-14 |
1954-04-13 |
Rca Corp |
Two-terminal sine wave oscillator
|
US2544211A
(en)
*
|
1949-05-18 |
1951-03-06 |
Rca Corp |
Variable impedance device
|
CA509126A
(en)
*
|
1949-05-28 |
1955-01-11 |
Western Electric Company, Incorporated |
Semiconductor translating devices
|
US2662122A
(en)
*
|
1949-06-01 |
1953-12-08 |
Bell Telephone Labor Inc |
Two-way transistor electrical transmission system
|
US2662124A
(en)
*
|
1949-06-01 |
1953-12-08 |
Bell Telephone Labor Inc |
Transistor amplifier circuit
|
US2647957A
(en)
*
|
1949-06-01 |
1953-08-04 |
Bell Telephone Labor Inc |
Transistor circuit
|
US2659774A
(en)
*
|
1949-06-07 |
1953-11-17 |
Bell Telephone Labor Inc |
Bidirectional transistor amplifier
|
US2659773A
(en)
*
|
1949-06-07 |
1953-11-17 |
Bell Telephone Labor Inc |
Inverted grounded emitter transistor amplifier
|
US2963578A
(en)
*
|
1949-06-11 |
1960-12-06 |
Automatic Elect Lab |
Signal translation apparatus employing transistors
|
US2677079A
(en)
*
|
1949-06-11 |
1954-04-27 |
Automatic Elect Lab |
Concentric translating device
|
US2713117A
(en)
*
|
1949-06-18 |
1955-07-12 |
Sylvania Electric Prod |
Heterodyne converter
|
US2634322A
(en)
*
|
1949-07-16 |
1953-04-07 |
Rca Corp |
Contact for semiconductor devices
|
US2644914A
(en)
*
|
1949-08-17 |
1953-07-07 |
Bell Telephone Labor Inc |
Multicontact semiconductor translating device
|
US2931898A
(en)
*
|
1949-08-31 |
1960-04-05 |
Rca Corp |
Semi-conductor oscillators
|
US2691074A
(en)
*
|
1949-08-31 |
1954-10-05 |
Rca Corp |
Amplifier having frequency responsive variable gain
|
US2609428A
(en)
*
|
1949-08-31 |
1952-09-02 |
Rca Corp |
Base electrodes for semiconductor devices
|
US2629767A
(en)
*
|
1949-08-31 |
1953-02-24 |
Rca Corp |
Semiconductor amplifier or oscillator device
|
DE972909C
(de)
*
|
1949-09-28 |
1959-11-05 |
Philips Nv |
Halbleiteranordnung unter Verwendung eines Halbleiterkoerpers, auf dem mindestens zwei gleichrichtende Elektroden und eine weitere Elektrode angebracht sind, und Einrichtung mit einer solchen Halbleiteranordnung
|
NL156301B
(nl)
*
|
1949-09-30 |
|
H Verheij S Machines Nv |
Broodopmaakmachine.
|
US2570436A
(en)
*
|
1949-09-30 |
1951-10-09 |
Rca Corp |
Crystal controlled oscillator
|
US2618690A
(en)
*
|
1949-10-06 |
1952-11-18 |
Otmar M Stuetzer |
Transconductor employing line type field controlled semiconductor
|
BE495936A
(hu)
*
|
1949-10-11 |
|
|
|
US2605306A
(en)
*
|
1949-10-15 |
1952-07-29 |
Rca Corp |
Semiconductor multivibrator circuit
|
US2647958A
(en)
*
|
1949-10-25 |
1953-08-04 |
Bell Telephone Labor Inc |
Voltage and current bias of transistors
|
BE500302A
(hu)
*
|
1949-11-30 |
|
|
|
US2645683A
(en)
*
|
1949-12-17 |
1953-07-14 |
Rca Corp |
Electromechanical transducer
|
US2627575A
(en)
*
|
1950-02-18 |
1953-02-03 |
Bell Telephone Labor Inc |
Semiconductor translating device
|
US2675433A
(en)
*
|
1950-04-27 |
1954-04-13 |
Rca Corp |
Degenerative amplifier
|
US2666150A
(en)
*
|
1950-05-04 |
1954-01-12 |
Ibm |
Crystal tetrode
|
US2713665A
(en)
*
|
1950-11-09 |
1955-07-19 |
Bell Telephone Labor Inc |
Transistor modulator circuits
|
US2644925A
(en)
*
|
1950-12-29 |
1953-07-07 |
Rca Corp |
Semiconductor amplitude modulation system
|
US2702316A
(en)
*
|
1951-02-28 |
1955-02-15 |
Rca Corp |
Signal modulation system
|
US2701302A
(en)
*
|
1951-03-29 |
1955-02-01 |
Rca Corp |
Semiconductor frequency converter
|
US2794863A
(en)
*
|
1951-07-20 |
1957-06-04 |
Bell Telephone Labor Inc |
Semiconductor translating device and circuit
|
US2702838A
(en)
*
|
1951-11-15 |
1955-02-22 |
Bell Telephone Labor Inc |
Semiconductor signal translating device
|
US2676271A
(en)
*
|
1952-01-25 |
1954-04-20 |
Bell Telephone Labor Inc |
Transistor gate
|
US2776381A
(en)
*
|
1952-01-25 |
1957-01-01 |
Bell Telephone Labor Inc |
Multielectrode semiconductor circuit element
|
US2693568A
(en)
*
|
1952-03-05 |
1954-11-02 |
Bell Telephone Labor Inc |
Current and voltage regulation
|
BE519804A
(hu)
*
|
1952-05-09 |
|
|
|
US2657360A
(en)
*
|
1952-08-15 |
1953-10-27 |
Bell Telephone Labor Inc |
Four-electrode transistor modulator
|
NL191850A
(hu)
*
|
1952-10-09 |
|
|
|
US2717342A
(en)
*
|
1952-10-28 |
1955-09-06 |
Bell Telephone Labor Inc |
Semiconductor translating devices
|
US2801389A
(en)
*
|
1952-11-18 |
1957-07-30 |
Ernest G Linder |
High energy bombardment-inducedconductivity control of electrical circuits
|
BE524722A
(hu)
*
|
1952-12-01 |
|
|
|
US2801347A
(en)
*
|
1953-03-17 |
1957-07-30 |
Rca Corp |
Multi-electrode semiconductor devices
|
US2901638A
(en)
*
|
1953-07-21 |
1959-08-25 |
Sylvania Electric Prod |
Transistor switching circuit
|
US2915646A
(en)
*
|
1953-12-04 |
1959-12-01 |
Rca Corp |
Semiconductor devices and system
|
US2906889A
(en)
*
|
1953-12-31 |
1959-09-29 |
Ibm |
Binary trigger circuit employing single transistor
|
NL195088A
(hu)
*
|
1954-02-26 |
|
|
|
US2884545A
(en)
*
|
1954-03-17 |
1959-04-28 |
Gen Precision Lab Inc |
Transistor protection circuit
|
NL93522C
(hu)
*
|
1954-03-26 |
|
|
|
US2904704A
(en)
*
|
1954-06-17 |
1959-09-15 |
Gen Electric |
Semiconductor devices
|
NL201086A
(hu)
*
|
1954-10-11 |
|
|
|
US2995665A
(en)
*
|
1955-05-20 |
1961-08-08 |
Ibm |
Transistors and circuits therefor
|
US2941092A
(en)
*
|
1955-10-25 |
1960-06-14 |
Philips Corp |
Pulse delay circuit
|
US2939965A
(en)
*
|
1956-12-20 |
1960-06-07 |
Abraham George |
Electrical switching circuit
|
US3097308A
(en)
*
|
1959-03-09 |
1963-07-09 |
Rca Corp |
Semiconductor device with surface electrode producing electrostatic field and circuits therefor
|
US3091703A
(en)
*
|
1959-04-08 |
1963-05-28 |
Raytheon Co |
Semiconductor devices utilizing carrier injection into a space charge region
|
NL130600C
(hu)
*
|
1960-03-22 |
|
|
|
US3169222A
(en)
*
|
1960-12-30 |
1965-02-09 |
Rca Corp |
Double-emitter transistor circuits
|
DE1223954B
(de)
*
|
1962-11-16 |
1966-09-01 |
Siemens Ag |
Halbleiterstromtor mit vier Zonen abwechselnd entgegengesetzten Leitungstyps und einer Steuerelektrode
|
US3351782A
(en)
*
|
1965-04-01 |
1967-11-07 |
Motorola Inc |
Multiple emitter transistorized logic circuitry
|