|
US2307440A
|
|
Sealing ring
|
|
US2270365A
|
|
Valve
|
|
US2192339A
|
|
Reciprocating valve
|
|
US1967276A
|
|
Lock-nut
|
|
US1963573A
|
|
Method of making lock washers
|
|
US1952483A
|
|
Mechanical lock
|
|
US1821867A
|
|
Joint structure for pipes and the like
|
|
US1851143A
|
|
Joint structure for pipes and the like
|
|
US1873855A
|
|
Fluid tight joint and method of making
|
|
US1821865A
|
|
Fluid tight joint and method of making
|
|
US1821863A
|
|
Fluid tight joint and method of making
|
|
US1821866A
|
|
Fluid tight joint and method of making
|
|
US1821864A
|
|
Fluid tight joint and method of making
|
|
US1821862A
|
|
Sealing ring for joints
|
|
US1878222A
|
|
Valve and the like
|
|
US1699217A
|
|
Valve
|
|
US1654516A
|
|
Valve
|
|
US1671139A
|
|
Valve
|
|
US1654517A
|
|
Valve
|
|
US1671140A
|
|
Valve
|
