| 
 1940  | 
 Design 96,105  | 
 Tone cabinets  | 
| 
 1940  | 
 2,203,569  | 
 Solovox  | 
| 
 1940  | 
 2,211,205  | 
 Reverberation apparatus (locking system)  | 
| 
 1940  | 
 2,214,764  | 
 Pick-up tone wheel (coil and magnet)  | 
| 
 1940  | 
 2,216,513  | 
 Slow decay system for electric organ  | 
| 
 1940  | 
 2,221,188  | 
 Improved swell or intensity control  | 
| 
 1940  | 
 2,224,729  | 
 Attack and decay control (vacuum tubes)  | 
| 
 1941  | 
 2,230,836  | 
 Artificial reverberation  | 
| 
 1941  | 
 2,233,256  | 
 Solovox improvements  | 
| 
 1941  | 
 2,241,363  | 
 Pedal changing manual note  | 
| 
 1941  | 
 2,245,337  | 
 Vacuum-tube system to give effect more like pipe organ  | 
| 
 1941  | 
 2,245,338  | 
 Sustaining pedal for Novachord  | 
| 
 1941  | 
 2,251,051  | 
 Organ with more than one set of generators  | 
| 
 1941  | 
 2,251, 052  | 
 Volume control for Solovox  | 
| 
 1941  | 
 2,253,782  | 
 Keyboard for Solovox  | 
| 
 1941.  | 
 2,254,366  | 
 Variable impedance; swell expression control  | 
| 
 1941  | 
 2,262,179  | 
 Improvements on Novachord  | 
| 
 1941  | 
 2,262,494  | 
 Simplified touch response key action for Novachord  | 
| 
 1941  | 
 2,266,030  | 
 Sustaining pedal for Novachord, to make it more like a piano  | 
| 
 1942  | 
 2,274,199  | 
 Quartet organ  | 
| 
 1942  | 
 2,276,389  | 
 Novachord improvements – frequency dividers  | 
| 
 1942  | 
 2,281,284  | 
 Means of determining altitude  | 
| 
 1942  | 
 2,281,493  | 
 Bichronous electric clock (filed 1931!)  | 
| 
 1942  | 
 2,281,494  | 
 Bichronous electric clock (filed 1931!)  | 
| 
 1942  | 
 2,281,495  | 
 Electrostatic organ  | 
| 
 1942  | 
 2,301,869  | 
 Frequency generating system  | 
| 
 1943  | 
 2,314,496  | 
 Tone wheels generating tone rich in harmonics with Vibrato effect  | 
| 
 1943  | 
 2,323,392  | 
 Improved vibrato  | 
| 
 1943  | 
 2,332,076  | 
 Organ devices for multi-part harmony  | 
| 
 1944  | 
 2,364,972  | 
 Bank-and-turn indicator (aircraft)  | 
| 
 1945  | 
 2,383,381  | 
 Camera shutter for aerial camera  | 
| 
 1946  | 
 2,408,929  | 
 Steering apparatus for unmanned aircraft  | 
| 
 1946  | 
 2,408,930  | 
 Frequency meter, control mechanism  | 
| 
 1947  | 
 2,413,870  | 
 Radiant energy detecting and control (Heat-seeker)  | 
| 
 1947  | 
 2,423,885  | 
 Radiant energy detecting apparatus (Heat-seeker)  | 
| 
 1947  | 
 2,432,151  | 
 Amplifying system  | 
| 
 1948  | 
 2,439,294  | 
 Steering control apparatus for light-seeker  | 
| 
 1948  | 
 2,439,295  | 
 Speed-responsive apparat for aircraft  | 
| 
 1949  | 
 2,480,131  | 
 Improved production of complex tones with clavier  | 
| Appendix III | Index |