| 2868513 | Heat exchanger | |||
| 2862694 | Heat exchanger | |||
| 2861335 | Method of forming a hollow box in a metal wall | |||
| 2568152 | Die for use with a punch | |||
| 2225856 | Heat exchanger | |||
| 2191631 | Brazing of thin metal structures | |||
| 2164629 | Radiator header with metering orifice nipples and method of making same | |||
| 2094341 | Die set | |||
| 1751865 | Method of brazing heating coils | |||
| 1439283 | Heat exchanger |
| GB273605A | ||||
| CA540404A |