|
US3279387A
|
|
Reversable pump and motor
|
|
US3139036A
|
|
Rotary piston action pumps
|
|
US2982156A
|
|
Power transmission mechanism
|
|
US3054357A
|
|
Dual pump power transmission
|
|
US2992712A
|
|
Reversing hydro-static transmission
|
|
US2963117A
|
|
Hydraulic braking system
|
|
US2839889A
|
|
Gear pump type hydraulic transmission
|
|
US2631695A
|
|
Hydraulic brake and pump
|
|
US2585150A
|
|
Ladder step
|
|
US2452253A
|
|
Floating sealing device
|
|
US2523317A
|
|
Rotary type air compressor
|
|
US1416222A
|
|
Sprinkler
|
|
US1325303A
|
|
Valve.
|
|
US1374306A
|
|
Automobile-signal
|
|
US1393894A
|
|
System of raising sunken ships
|
