| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Switzerland | 6 | |
| #3 | Germany | 4 | |
| #4 | Canada | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Textiles and paper | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Mechanically computing digital computers | |
| #2 | Typewriters | |
| #3 | Clutches and brakes | |
| #4 | Counting mechanisms |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pickering Crosman Loring | 9 |
| #2 | Gardner Company | 6 |
| #3 | Crosman Loring P | 2 |
| #4 | Gardner Edna B | 2 |
| #5 | Britten Jr Edwin F | 2 |
| #6 | Gardner Clyde | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2107142A | Listing adding machine | |
| US2121683A | Calculating machine | |
| US2087182A | Listing adding machine | |
| US2081423A | Listing adding machine | |
| US2071501A | Adding and listing machine | |
| US2085630A | Calculating machine | |
| US2026869A | Paper guide device | |
| US2036400A | Clutch | |
| US1994211A | Listing adding machine | |
| US1997679A | Listing calculator | |
| US1945027A | Listing calculator | |
| US1945026A | Paper feed mechanism | |
| US1913983A | Register | |
| US1932013A | Register | |
| US1864193A | Calculating machine | |
| CA309715A | Calculating machine |