| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Machine tools | |
| #3 | Mechanical elements | |
| #4 | Civil engineering | |
| #5 | Engines, pumps and turbines | |
| #6 | Control |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Turning | |
| #3 | Sawing | |
| #4 | Non-positive-displacement pumps | |
| #5 | Working stone | |
| #6 | Venting or aerating devices | |
| #7 | Foundations and excavations | |
| #8 | Earth drilling | |
| #9 | Systems controlling non-electric variables | |
| #10 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pierce Kenneth R | 7 |
| #2 | Kwech Horst | 5 |
| #3 | Wachs Edward H | 4 |
| #4 | Olson Peter K | 4 |
| #5 | Parker Howard W | 2 |
| #6 | Arnemann Scott | 2 |
| #7 | Ferrar Scott | 2 |
| #8 | Polifka Keith P | 1 |
| #9 | Bonow William | 1 |
| #10 | Ferrar Scott J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6244147B1 | Weld sample cutter | |
| US6112627A | Squaring machine | |
| US5937373A | Method of controlling an underground fluid flow system | |
| US5933963A | Tube saw | |
| US5960686A | Alignment pin for tube squaring machine | |
| US6009905A | Mounting for a valve operating machine | |
| US5823255A | Tubular casing cutter | |
| US5692422A | Squaring machine | |
| US5605084A | Squaring machine for various sized tubes | |
| US5619893A | Tube squaring machine | |
| US5381996A | Valve operator | |
| US5054342A | Pipe machining apparatus | |
| US4791842A | Pipe machining apparatus | |
| US4762038A | Pipe machining apparatus | |
| US4655108A | Tube-squaring tool and clamping mechanism | |
| US4677884A | Portable end prep lathe | |
| US4543861A | Portable lathe | |
| US4490909A | Travelling pipe cutter | |
| US4483106A | Weld sander | |
| US4318391A | Pile-cutting machine and method of cutting multi-sided piles |