| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Switzerland | 2 | |
| #4 | Denmark | 2 | |
| #5 | Spain | 2 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Cleaning heat-exchanger internal surfaces | |
| #2 | Military vessels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lumb Charles Fletcher | 9 |
| #2 | Charles Fletcher Lumb | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA194929A | Cleaner for boiler tubes | |
| GB191311389A | Improvements in Boiler Tube Cleaners. | |
| GB191306065A | Improvements in Boiler Tube Cleaners. | |
| GB191207990A | Improvements in or relating to Submarines and other Ships. | |
| CA405088A | Metal powder spraying apparatus | |
| US1121192A | Boiler-tube cleaner. | |
| CA391587A | Metal surface coating method |