| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Measurement | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Fire-fighting | |
| #2 | Venting or aerating devices | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Measuring speed and acceleration | |
| #6 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lewis Leroy M | 23 |
| Publication | Filing date | Title |
|---|---|---|
| US2469832A | Automatic sprinkler | |
| US2469831A | Deluge valve | |
| US2352843A | Fire protective system | |
| US2377947A | Valve for fire protective systems | |
| US2342589A | Valve for fire preventive systems | |
| US2298062A | Fire protective system | |
| US2298061A | Fire preventive system | |
| US2129012A | Automatic sprinkler | |
| US2125510A | Automatic sprinkler | |
| US1646618A | Dry-pipe-valve accelerator | |
| US1628674A | Dry-pipe valve | |
| US1514090A | Alarm check valve | |
| US1569326A | Dry-pipe valve | |
| US1382368A | Process of making fusible links | |
| US1339829A | Fusible link and strut | |
| US1339567A | Alarm-controlling mechanism | |
| US1244106A | Fusible link. | |
| US1252457A | Retarding-valve. | |
| US1179441A | Sight-drain. | |
| CA510620A | Deluge valve |