| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | France | 5 | |
| #3 | United Kingdom | 4 | |
| #4 | Canada | 3 | |
| #5 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Boettcher Stephen A | 9 |
| #2 | Keefe James V | 1 |
| #3 | Page Jack C | 1 |
| #4 | Boettcher Stephen Arthur | 1 |
| #5 | Cesna Joseph V | 1 |
| #6 | Boettcher Stepheen Arthur | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR1458710A | Dressing ring for lapping machine and its mounting device | |
| FR1436231A | Polishing method and apparatus | |
| US3329167A | Control valve | |
| US3388506A | Lap limiting fixture means | |
| US3304662A | Apparatus for lapping | |
| FR1351849A | Grinding machine | |
| US3110992A | Device for feeding abrasive mixture to a lapping machine | |
| FR1339102A | Lapping machine | |
| GB947142A | Improvements in or relating to lapping machines | |
| US3110991A | Device for feeding an abrasive mixture to a lapping machine | |
| US3110988A | Lapping machine | |
| US3040770A | Valve | |
| CA695708A | Lapping machine | |
| CA650194A | Lapping machine | |
| CA699192A | Lapping machine |