| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Machine tools | |
| #4 | Engines, pumps and turbines | |
| #5 | Transport | |
| #6 | Packaging and shipping |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brown Walter V | 10 |
| #2 | Logemann Warren F | 2 |
| #3 | Parkinson Lindley A | 1 |
| #4 | Clark Frank G | 1 |
| #5 | Gallup Norman G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3344947A | Fill cap fastening means | |
| US3280838A | Vent valve | |
| US3205823A | Pump regulating system | |
| US3168906A | Disconnectible coupling | |
| US3191541A | Rotary fluid device | |
| US3065328A | Sheet forming and seaming machine | |
| US2684683A | Safety closure for truck and trailer tank bodies | |
| US2669250A | Self-venting fill cap for tank bodies | |
| US2679278A | Apparatus for assembling tank bodies | |
| US2349137A | Safety valve for tanks | |
| US2324356A | Cover structure | |
| CA538650A | Manhole type closures | |
| CA544196A | Self-venting fill caps for tank bodies |