|
US2613959A
|
|
Coupling for threadless pipes
|
|
US2545168A
|
|
Pipe connector
|
|
US2544109A
|
|
Pipe connection
|
|
US2490687A
|
|
Flexible connection
|
|
US2511335A
|
|
Steam connection between railway cars
|
|
GB646787A
|
|
Improvements in or relating to pipe couplings
|
|
GB646788A
|
|
Improvements in or relating to pipe couplings
|
|
US2534199A
|
|
Threadless tube coupling
|
|
US2490686A
|
|
Coupling for flexible metal hose
|
|
US2496790A
|
|
Apparatus for making flexible metal hose
|
|
US2534198A
|
|
Self-flaring pipe coupling
|
|
US2473879A
|
|
Flexible metal hose connection
|
|
US2553981A
|
|
Self-upsetting coupling
|
|
US2545167A
|
|
Threaded coupling
|
|
US2613958A
|
|
Coupling for double-walled pipes
|
|
US2522195A
|
|
Pipe connection
|
|
US2547889A
|
|
Pipe connector
|
|
US2522194A
|
|
Pipe connector
|
|
US2545930A
|
|
Pipe connector
|
|
US2497274A
|
|
Pipe connector
|
