Diverse patenten Donald Leslie

 

static musical tone generator system 28 OKT 1955 US2921494 :

Acoustic apparatus 26 OCT 1948 US2727583

Acoustic apparatus for producing tremolo and vibratoUS3174579

 

Apparatus for chlorination OF POOLS US2820701

Apparatus for minimizing beat effects 26 JAN 1959 US3049040

 

Apparatus for producing phase shift in electronic organs AUG 28 1961 US3159706

COMPLEMENTARY HARMONIC SYSTEM FOR FLUTE TYPE ORGANS 17 MEI 1965 US3432608

 

 

 

 

Cross-wired organ system and rectifier therefor 25 FEBR 1957 US2949803

 

Derivative voltage regulation circuit 6 MEI 1958 US3005162

 

Electrical circuit arrangement for complex wave generators 29 JAN 1959 US3041910

 

Electronic musical instrument incorporating rotary electrostatic devices for producing celeste or chorus effects 10 MAR 1964 US3372225

 

 

ELECTRONIC ORGAN UTILIZING PROPORTIONAL FREQUENCY CHANGES FOR HARMONIC STRUCTURE 1 FEBR 1966 US3458642

 

 

 

Electrostatic musical tone generator system 28 OKT 1955 US2921494

 

Mercury slip ring assembly 26 DEC 1958 US3014192

 

 

Multiple sound channel tremolo device US3100024

 
modeltrain control system

 

MULTIVOICE ELECTRONIC ORGAN 10 DEC 1965 US3420941

 

 

Pitch broadening apparatus for musical instruments having electronic tone generators 28 DEC 1958 US3146291

 

 Planetary acoustic phase shift mechanism US4017685

 

 

 

Remote control for model train system US3315613

 

 

 

Rotary electrostatic speaker US3058541

Rotary tremolo device having means for mixing signals emanating from rotary and non-rotary sources 21 DEC 1959 US2995054

 

 

Rotatable tremulant sound producer 3 JAN 1956 US2869667

 

Rotatable tremulant sound producer US2489653

 

Selective high frequency compression device for speaker system 4 FEBR 1976 US4084474

 

 

Speaker system for adding tremolo US3080786

SPEAKER SYSTEM FOR PULSATO AND CELESTE EFFECTS 28 JULI 1967 US3499114

 

 
 

Step-by-step electrical circuit controller 26 AUG 1950 US2742537

 

 

Stereophonic system for electronic organs US4622878

 

 

Swimming pool water level control system 6 MEI 1952 US2739939

 

 

System for recording and reproducing electric organ musicUS3095477

 

 

 

U Rotatable tremulant sound producer S2618352

 

 

ELEKTRONIC SPEAKER SYSTEEM 24 SEPT 1948 US2596258

 

 

 

 

MULTIPLE CHANNEL SPEAKER SYSTEM JULI 1955 US2887000

 

 

Vibrato oscillator for electronic organs or the like 5 DEC 1958 US2994240