Assignee
PATENT DEV LTD
3 granted patents·16 citations·filing 1980–1980
Top patents by PatentIndex Score
3 records- 0145US4438699AMethod for remote positioning of explosive charges in mining voidsPATENT DEV LTD·Filed 1980·Granted Mar 27, 1984·9 cites·10 claims
- 0232US4205881AMachine and method for mining hard material in-situ between adjacent auger holesPATENT DEV LTD·Filed 1980·Granted Jun 3, 1980·4 cites·34 claims
- 0330US4568126AMethod and machine for removing blockage and silt from abandoned auger holesPATENT DEV LTD·Filed 1980·Granted Feb 4, 1986·3 cites·11 claims
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