| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 31 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Environmental technology | |
| #4 | Mechanical elements | |
| #5 | Transport | |
| #6 | Consumer goods | |
| #7 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Chester F | 37 |
| Publication | Filing date | Title |
|---|---|---|
| US2879038A | Under-reamer | |
| US2877818A | Anchor bolt with spring biased reaming plates | |
| US2643573A | Masonry anchor bolt | |
| US2583429A | Counterbore cutter for boltholes in concrete | |
| US2129061A | Brake equalizer | |
| US2092606A | Railroad crossing signal | |
| US2052473A | Brake equalizer | |
| US1923868A | Fuel enriching means | |
| US1854197A | Valve construction | |
| US1863161A | Carburetor | |
| US1828415A | Carburetor | |
| US1613706A | Hydrocarbon motor | |
| US1742861A | Building | |
| US1814601A | Carburetor | |
| US1761729A | Carburetor | |
| US1577802A | Carburetor | |
| US1687131A | Carburetor | |
| US1505566A | Carburetor | |
| US1272049A | Drawing-board. | |
| US1510520A | Carburetor |