senllka.blogg.se - Portable mining dredge

C22B3/00- Extraction of metal compounds from ores or concentrates by wet processes.

C22B- PRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS.

C22- METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS.

suction dredgers wherein at least a part of the soil-shifting equipment is handheld

E02F3/8891- Dredgers Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g.E02F3/88- Dredgers Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g.E02F3/04- Dredgers Soil-shifting machines mechanically-driven.E02F3/00- Dredgers Soil-shifting machines.E02- HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING.Priority to US09/240,045 priority Critical patent/US6079130A/en Application granted granted Critical Publication of US6079130A publication Critical patent/US6079130A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links 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 Freeman Thomas A. Priority date (The priority date is an assumption and is not a legal conclusion. Freeman Original Assignee Freeman Thomas A. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US09/240,045 Inventor Thomas A.

Google Patents Portable gold mining dredgeĭownload PDF Info Publication number US6079130A US6079130A US09/240,045 US24004599A US6079130A US 6079130 A US6079130 A US 6079130A US 24004599 A US24004599 A US 24004599A US 6079130 A US6079130 A US 6079130A Authority US United States Prior art keywords drum receptacle attached pump dredge Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6079130A - Portable gold mining dredge