| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Automatic musical instruments | |
| #2 | Toys | |
| #3 | Games | |
| #4 | Household appliances | |
| #5 | Special musical instruments |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duncan Theodore R | 11 |
| #2 | Theodore R Duncan | 2 |
| #3 | Aleson Robert N | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2876670A | Music comb with cast base | |
| US2759387A | Toy piano | |
| US2647427A | Music box comb and sounding board construction | |
| US2562896A | Means for releasing music comb vibrators from their plucking elements | |
| US2485143A | Game piece | |
| US2485142A | Whistling toy | |
| US2439799A | Salt shaker | |
| US2169682A | Mechanical toy | |
| CA587446A | Phonograph device | |
| CA767970A | Miniature phonograph | |
| CA587447A | Music comb device |