| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Computer technology | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines | |
| #5 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Typewriters | |
| #2 | Mechanically computing digital computers | |
| #3 | Filing and indexing | |
| #4 | Supplying combustion engines | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carlos Wittenmyer | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2996245A | Punching and reading apparatus for calculating machines | |
| US2633222A | Automatic typewriter | |
| US2637493A | Automatic printing apparatus for calculating machines | |
| US2633506A | Selective circuit maker | |
| US2404264A | Posting machine | |
| US2394733A | Automatic typewriter | |
| US2493709A | Automatic typewriter | |
| US2146874A | Typewriter | |
| US2127798A | Paper positioning apparatus for typewriters | |
| US1803823A | Visible index filing device | |
| US1840424A | Calculating machine | |
| US1416151A | Vaporizer |