US2846240A
|
|
Coil spring detent coupling with differentially tapered operating surfaces
|
US2921801A
|
|
Flexible pipe coupling
|
US2922665A
|
|
Grip element and coupling device
|
US2857666A
|
|
Making coupling assemblies
|
US2777715A
|
|
Flange coupling with sealing means responsive to internal or external pressure
|
US2693378A
|
|
Quick-release coupling
|
US2642311A
|
|
Mobile pipe line
|
US2587810A
|
|
Spring grip pipe coupling
|
US2402594A
|
|
Resilient mechanical wheel
|
US2259453A
|
|
Coupling unit
|
US2184376A
|
|
Coupling device
|
CA609810A
|
|
Pipe coupling
|
CA569505A
|
|
Coupling construction
|
CA524930A
|
|
Mobile pipe line
|
CA535092A
|
|
Quick release coupling
|
CA580164A
|
|
Coupling construction
|
CA547424A
|
|
Coupling with sealing means responsive to internal or external pressure
|
CA531314A
|
|
Coupling construction
|