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Document |
Document Title |
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6988953 |
Obstacle on a bowling lane
The invention relates to an obstacle on a bowling lane for keeping the bowling ball on a single bowling lane. The obstacle comprises at least one obstacle element which is arranged to be movable...
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5380251 |
Bowling alley bumper system and method
A bowling alley bumper system and method selectively guards against a bowling ball rolling into a gutter. A bungee cord extends along each side edge of a bowling alley lane and in a first position...
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EP0286683B1 |
HYDRAULIC PILOT TYPE DIRECTION CONTROL VALVE
Abstract of EP0286683 The hydraulic pilot type direction control valve has a block (39) defining a hydraulic pilot operation section (32), and one or more pilot hydraulic chamber (40,41) in this...
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4832082 |
Hydraulic pilot operated directional control valve
A hydraulic pilot operated directional control valve (30; 60; 70) in which at least one pilot hydraulic pressure chamber (40, 41; 76) is formed within a block (39; 64; 75) of a hydraulic pilot...
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