| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Lubricating | |
| #2 | Pipes | |
| #3 | Unspecified technologies | |
| #4 | Venting or aerating devices | |
| #5 | Vehicle tyre repairing | |
| #6 | Fire-fighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Norgren Carl A | 16 |
| #2 | Gunnar Palmgren Per | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2538031A | Air line lubricator | |
| US2381554A | Compression fitting | |
| US2442777A | Lubricant injecting means | |
| US2308773A | Lubricator | |
| US2223700A | Lubricator | |
| US2223699A | Check valve | |
| US2171945A | Hose connector | |
| US1977917A | Hose coupling | |
| US2001394A | Fire extinguisher | |
| US1824363A | Spray gun | |
| US1877528A | Valve | |
| US1782741A | Lubricating device for pneumatically-operated tools | |
| US1736357A | Spray gun | |
| US1701162A | Air chuck | |
| US1684713A | Hose clamp | |
| US1613527A | Air chuck |