|
US3200249A
|
|
Multi-stage free-piston compressor
|
|
US3043282A
|
|
Free-piston engine
|
|
GB934357A
|
|
Free-piston compressor
|
|
GB840047A
|
|
"improvements in or relating to free-piston engines"
|
|
US2939273A
|
|
Method and apparatus for starting free-piston engines
|
|
GB851449A
|
|
Improvements in free piston internal combustion engine actuated hydraulic pumps
|
|
US3031972A
|
|
Free piston engine driven pump assembly
|
|
US2697548A
|
|
Free piston engine and compressor and means for regulating the output thereof
|
|
US2167951A
|
|
Operation of internal combustion engines
|
|
GB485970A
|
|
Improvements in and relating to a method of and apparatus for controlling the torqueof internal combustion engines or turbines
|
