US4495989A
|
|
Multiple coil heat exchanger
|
JPS5677691A
|
|
Multistage coil heat exchanger
|
DK327880A
|
|
Heat exchangers with multiple spiral
|
CA1112031A
|
|
Method of making a helically corrugated tube
|
US4203312A
|
|
Corrugated tubing with variable depth corrugations and method of making the same
|
CA1104073A
|
|
Corrugated tubing with variable depth corrugations and method of making the same
|
US4171634A
|
|
Method of making corrugated tubing with graduated pitch
|
AU2856277A
|
|
Forming helical corrugations
|
GB1590777A
|
|
Method of forming helically corrugated tubing
|
US4059004A
|
|
Method of forming helically corrugated tubing
|
CA968635A
|
|
Method for making a tubing unit with helically corrugated tube
|
GB1365039A
|
|
Method for making a tubing unit with helically corrugated tube
|
US3777343A
|
|
Method for forming a helically corrugated concentric tubing unit
|
CA925444A
|
|
Double wall helically corrugated tubing unit and method of forming same
|