| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | United Kingdom | 2 | |
| #3 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Milling | |
| #3 | Grinding or polishing devices | |
| #4 | Tools for connecting or disengaging | |
| #5 | Domestic washing | |
| #6 | Grinding tools | |
| #7 | Shafts | |
| #8 | Spraying devices | |
| #9 | Gearing | |
| #10 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Albertson Frans O | 16 |
| #2 | Gustav Olsen | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1757228A | Polishing device | |
| US1724742A | Abrasive device | |
| GB275974A | Improvements in chucks | |
| GB262688A | Improvements in or relating to tools for refacing valve seats | |
| US1599266A | Valve-seat refacer | |
| US1722880A | Valve-grinding machine | |
| US1526579A | Wire brush | |
| US1481078A | Flexible shafting | |
| US1517240A | Power-transmitting arrangement | |
| US1497053A | Valve-refacing apparatus | |
| US1386085A | Valve-grinder | |
| US1421133A | Valve-refacing apparatus | |
| US1340359A | Valve-seat reamer | |
| US1381101A | Bushing-remover | |
| US1301891A | Valve-refacing tool. | |
| US1286897A | Bushing-remover. | |
| US1282018A | Valve-grinder. | |
| US1285573A | Refacing-tool for puppet-valves. |