| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Canada | 5 | |
| #3 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Sawing | |
| #2 | Unspecified technologies | |
| #3 | Working stone | |
| #4 | Turning | |
| #5 | Venting or aerating devices | |
| #6 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Coblitz Sanford E | 8 |
| #2 | E Coblitz Sanford | 5 |
| #3 | B Gill John | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3283978A | Tool for fracturing pipe | |
| US3129865A | Chain receiving and engaging means for a parting tool | |
| US2968822A | Combination thread cutting tool and reamer | |
| CA715261A | Chain receiving and engaging means for a parting tool | |
| CA833870A | Chain-tool | |
| CA868124A | Cutting system means for severing a pipe | |
| CA830823A | Cutting element for a pipe-cutting chain | |
| CA779562A | Tool for fracturing pipe |