US3133730A
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Spring mounted impact tool for breaking pavement
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US3181627A
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Apparatus for tamping and for breaking concrete and masonry
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US2845258A
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Impact type concrete breaking machine
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Pneumatically operated hammer device
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Pneumatically operated hammer device
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US2651292A
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Pneumatic cylinder hammer and control therefor
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US2700549A
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Tool for demolition machines
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US2672331A
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Concrete breaking machine
|
US2517980A
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Breaker attachment for shovels
|
US2613923A
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Pavement breaking machine
|
US2335172A
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Concrete breaking machine
|
US2335171A
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Portable cutting and breaking machine
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US2253265A
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Sloper
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US2136415A
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Safety system and device for use therewith
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CA526410A
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Pneumatic cylinder hammers and controls therefor
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CA508472A
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Concrete breaking machines
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CA534756A
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Concrete breaking machinery
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CA465617A
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Motor driven cutting and breaking machine
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CA477374A
|
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Pavement breaking machines
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