| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Engines, pumps and turbines | |
| #5 | Textiles and paper | |
| #6 | Mechanical elements | |
| #7 | Civil engineering | |
| #8 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Unspecified technologies | |
| #3 | Animal care | |
| #4 | Typewriters | |
| #5 | Venting or aerating devices | |
| #6 | Foundations and excavations | |
| #7 | Milling | |
| #8 | Grinding or polishing devices | |
| #9 | Cyclically operating valves | |
| #10 | Selecting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hobbs Elbert R | 11 |
| #2 | Stombaugh Arch V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1759400A | Ear-tagging apparatus for stock | |
| US1828143A | Feed grinder | |
| US1375153A | Self-cleaning type | |
| US1219308A | Rotary valve. | |
| US1295165A | Rotary-valve gear. | |
| US1137758A | Rotary valve. | |
| US1045845A | Telephone system. | |
| US1025269A | Telephone system. | |
| US1051109A | Telephone system. | |
| US983898A | Ringing-key. | |
| US891171A | Ground-anchor for posts or poles. |