US3174698A - Rotary rock crusher - Google Patents
US3174698A US324333A US32433363A US3174698A US 3174698 A US3174698 A US 3174698A US 324333 A US324333 A US 324333A US 32433363 A US32433363 A US 32433363A US 3174698 A US3174698 A US 3174698A Authority US United States Prior art keywords breaker shaft housing cylindrical mounting Prior art date Legal status …
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