| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Agriculture | |
| #4 | Machine tools | |
| #5 | Civil engineering | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Crop agriculture | |
| #3 | Earth drilling | |
| #4 | Handles for hand implements | |
| #5 | Nails | |
| #6 | Domestic washing | |
| #7 | Venting or aerating devices | |
| #8 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Surbaugh John S | 15 |
| #2 | Hartzell Clyde C | 1 |
| #3 | Warren Charles M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1564720A | Shovel and scoop blade | |
| US1512720A | Shovel and scoop blade | |
| US1445185A | Handle and blade connection | |
| US1374336A | Handle and blade connection | |
| CA189830A | Shovel, etc. | |
| CA186429A | Shovel and scoop | |
| CA184329A | Shovel | |
| US1247032A | Shovel, scoop, &c. | |
| US1212582A | Shovel and scoop. | |
| CA155184A | Shovel, spade and scoop | |
| US1083952A | Shovel, spade, and scoop. | |
| US989204A | Drilling-machine. | |
| US914893A | Coal-drill. | |
| US862525A | Coal-drill. | |
| US858311A | Drilling-machine. |