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Newer page: version 22 Last edited on June 17, 2019 7:27 pm. by
Older page: version 21 Last edited on June 17, 2019 7:20 pm. by
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 1921 1,435,520 Hammond Stereoscopic Motion Picture (3d movies!). 
 1929 1,719,805 Hammond Alternating Current Clock (synchronous motor driven). 
 1934 1,956,350 Hammond Electrical Musical Instrument (original organ patent). 
 1936 2,036,892***Smiley Art of Producing Musical Sounds Electronically (RE20825). 
-1936 2,083,246***Smiley Electronic Musical Instrument(RE20831). 
+1936 2,083,246***Smiley Electronic Musical Instrument (RE20831). 
 1937 2,099,204 Hammond Multiple Key Switch (keyboard switch contacts). 
 1938 2,117,002* Hammond Keyboard for Musical Instruments (keyboard construction). 
 1938 2,126,464***Hammond Electrical Musical Instrument (Touch sensitive circuit). 
 1938 2,126,682***Hammond Electrical Musical Instrument (Tube frequency divider). 
@@ -51,12 +51,12 @@
 1945 2,373,560 Hanert Sound Recording Method and Apparatus (Recording with vibrato). 
 1945 2,382,413* Hanert Electrical Musical Apparatus (Scanner vibrato). 
 1947 2,429,226 Hanert Electrical Musical Instrument (Keying system). 
 1947 2,432,151 Hammond Amplifying System (Amplifier with auto gain control). 
-1949 2,480,131 Hammond Electrical Musical Instrument (Coil-springs with pickups). 
+1949 2,480,131 Hammond Electrical Musical Instrument (Pedal clavier with coil-spring pickups). 
 1949 2,480,132* Hammond, Hanert Electrical Musical Instrument (Single octave pedal clavier). 
 1950 2,498,367 Hammond, Hanert Electrical Musical Instrument (Chorus generator). 
-1950 2,499,244* Hammond, Stephens Pedal Clavier for Musical Instruments (spinet pedal clavier). 
+1950 2,499,244* Hammond, Stephens Pedal Clavier for Musical Instruments (Spinet pedal clavier). 
 1950 2,500,820 Hanert Electrical Musical Instrument (Tube generators w/chorus effect). 
 1950 2,500,821 Hanert, Hammond Electrical Musical Instrument (Pedal generators w/slow decay). 
 1950 2,501,172 Hammond, Hanert Electrical Musical Instrument (Bass tone generator). 
 1950 2,506,451* Hammond Organ Console (M series spinet console design). 

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