| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Materials and metallurgy | |
| #4 | Audio-visual technology | |
| #5 | Surface technology and coating | |
| #6 | Transport | |
| #7 | Weapons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dunn Andrew C | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US3070394A | Silent door closer | |
| US2865068A | Apparatus for casting metal | |
| US3008824A | Method of forging powdered materials | |
| US2340047A | Flare gun | |
| US2304556A | Door control apparatus | |
| US2219951A | Casting method | |
| US2258579A | Electroforming method of making molds | |
| US1966957A | Door closer | |
| US1966956A | Door control apparatus | |
| US1755775A | Earpiece | |
| US1351843A | Shock-absorber | |
| US1244594A | Door-controlling device. |