Springing structure of a helmet, absorbing hits, preferably of gunpowder ammunition, cumulating the strokes with entire surface of the helmet and method of the stroke cumulation
PL413260A1
Combined impact absorbers, preferably of projectiles
PL414440A1
Butt of a weapon, favourably a carbine weapon, equipped with the springing element as a recoiler of the bent butt
PL411073A1
Profitable shape, preferably of gases from profitably combustion engine and method of its operation
PL409266A1
Water recoil jet tank, improving performance of marine propeller and method of operation
PL407168A1
Movable set absorbing the energy of the hitting bullet and the method
PL401312A1
Resistance controlling device for fish which is on the fishing rod and the method
PL342464A1
Wheeled vehicles powered by means of muscle force through a linkage and method of powering such vehicle
PL307389A3
Method of arresting and collecting balls as well as sports ground edifice therefor and for visual advertisement
PL307383A1
Method of arresting and collecting balls in sports games as well as sports ground edifice therefor and for visual advertisement
PL297307A1
Closed-cycle converter for converting potential energy of a liquid into kinetic one
PL290985A1
Method of splitting large chunks of wood
PL290984A1
Energy converter for converting potential energy of a liquid into kinetic one
PL290662A1
Fishing gear for fishing predatory fishes
PL257622A2
Method of permanently bonding a metal wire net with a plastic material
