| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 23 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Thermal processes | |
| #3 | Machine tools | |
| #4 | Machines | |
| #5 | Transport | |
| #6 | Furniture and games | |
| #7 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Unspecified technologies | |
| #3 | Explosiveness missiles | |
| #4 | Domestic stoves for solid fuels | |
| #5 | Domestic stoves | |
| #6 | Steam generation | |
| #7 | Percussive tools | |
| #8 | Punching metal | |
| #9 | Kitchen equipment | |
| #10 | Vehicle tyre repairing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nathaniel Baldwin | 23 |
| Publication | Filing date | Title |
|---|---|---|
| US2827541A | Electric steam producing devices | |
| US2582898A | Spacing punch | |
| US2343859A | Telephone receiver | |
| US1902685A | Combination tongs and poker device for fire grates and fireplaces | |
| US1701523A | Acoustic diaphragm | |
| US1772125A | Loud-speaker armature | |
| US1778711A | Loud-speaker | |
| US1687359A | Loud speaker | |
| US1726533A | Loud-speaker | |
| US1683946A | Loud speaker | |
| US1592172A | Telephone receiver | |
| US1753979A | Acoustic diaphragm and loud-speaker combination | |
| US1761100A | Acoustic diaphragm and loud-speaker combination | |
| US1763876A | Acoustic diaphragm and mounting | |
| US1738938A | Toy gun and projectile | |
| US1683945A | Telephone receiver | |
| US1681161A | Telephone receiver | |
| US1672294A | Telephone receiver | |
| US1604251A | Telephone receiver | |
| US1744032A | Diaphragm |