| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Fluid heaters | |
| #2 | Steam generation | |
| #3 | Physical therapy devices | |
| #4 | Heat-exchanger without contact |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alexander Carl Z | 20 |
| #2 | Alexander Earl S | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2856504A | Heating unit | |
| US2847545A | Portable electrical heating device | |
| US2841685A | Radiators | |
| US2905153A | Stand boiler | |
| US2736790A | Radiators | |
| US2717738A | Hot air heating devices | |
| US2663787A | Heating device | |
| US2664861A | Steam boiler | |
| US2642046A | Stand boiler with vertical flue, circulating coil, and indirectly heated domestic supply | |
| US2511683A | Boiler | |
| US2411675A | Water heater | |
| US2440998A | Storage water heater having a heating chamber and flue | |
| US2250900A | Steam boiler | |
| US1491371A | Boiler | |
| US1240804A | Steam-boiler. | |
| CA229756A | Steam boiler | |
| CA557498A | Radiators for heating purposes | |
| CA457433A | Steam boiler | |
| CA546173A | Hot air heating devices | |
| CA513216A | Boiler |