|
US2148036A
|
|
Standard adapter joint for connecting tubing
|
|
US2080271A
|
|
Reducer for threaded follower pipe joints or couplings
|
|
GB462425A
|
|
Improvements relating to pipe couplings
|
|
GB458210A
|
|
Improvements relating to pipe couplings
|
|
US2074079A
|
|
Torque measuring wrench
|
|
US2078806A
|
|
Automatic plate valve
|
|
US2031499A
|
|
Adjustable repair clamp for bell and spigot joints
|
|
US1984806A
|
|
Gasket for pipe joints and clamps
|
|
US1967682A
|
|
Internal combustion engine
|
|
US2021745A
|
|
Threaded follower pipe joint or fitting
|
|
US1942489A
|
|
Gasket
|
|
US1966202A
|
|
Liquid filled gasket
|
|
US1911126A
|
|
Split sleeve repair device
|
|
US2059573A
|
|
Pipe clamp
|
|
US1932636A
|
|
Rotary valve for compressors
|
|
US1951034A
|
|
Adjustable repair clamp for bell and spigot joints
|
|
US1993927A
|
|
Pipe clamp
|
|
US1902350A
|
|
Heat exchanger
|
|
US1896502A
|
|
Heat exchanger
|
|
US1972706A
|
|
Heat exchanger
|
