| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Chemical engineering | |
| #3 | Agriculture | |
| #4 | Foods and drinks | |
| #5 | Basic materials chemistry | |
| #6 | Packaging and shipping | |
| #7 | Machines | |
| #8 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Separating solids | |
| #3 | Crop agriculture | |
| #4 | Dredging | |
| #5 | Milling | |
| #6 | Street cleaning | |
| #7 | Meat processing | |
| #8 | Vehicle transmission mounting | |
| #9 | Transport or storage devices | |
| #10 | Gas, coke and tar production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cook David B | 11 |
| #2 | Cookinham Edward F | 3 |
| #3 | Cookingham Edward F | 1 |
| #4 | Cook David Bradford | 1 |
| #5 | Schaupp Harry A | 1 |
| #6 | Cordier Harry G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1751074A | Road vehicle | |
| US1874634A | Stone spreader | |
| US1701746A | Snowplow | |
| US1783009A | Road machinery | |
| US1860805A | Scarifier | |
| US1672375A | Road roller | |
| US1510546A | Apparatus for handling gravel | |
| US1620078A | Stone crusher | |
| US1554169A | Gravel screen | |
| US1458394A | Scarifier | |
| US1115900A | Scarifier. | |
| US766812A | Folding and transportable elevator. | |
| US778306A | Bin-chute gate and operating mechanism. | |
| US1134945A | Scarifier. | |
| CA233198A | Scarifier |