Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by D&K Detector Sales Inc filed Critical D&K Detector Sales Inc Priority to US06/399,786 priority Critical patent/US4472269A/en Assigned to D & K DETECTOR SALES, INC. Original Assignee D&K Detector Sales Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Swick Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US06/399,786 Inventor Thomas E.
Google Patents Sluice box classifier for gold mining dredgeĭownload PDF Info Publication number US4472269A US4472269A US06/399,786 US39978682A US4472269A US 4472269 A US4472269 A US 4472269A US 39978682 A US39978682 A US 39978682A US 4472269 A US4472269 A US 4472269A Authority US United States Prior art keywords trough sluice box overburden box sluice Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4472269A - Sluice box classifier for gold mining dredge US4472269A - Sluice box classifier for gold mining dredge
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