Assignee
AMERICAN LONGWALL MINING CORP
US·5 granted patents·131 citations·filing 1990–1992
Top patents by PatentIndex Score
5 records- 0191US5131528AConveyor apparatus with hydraulic tensioning controlAMERICAN LONGWALL MINING CORP·Filed 1991·Granted Jul 21, 1992·58 cites·13 claims
- 0262US5074827AReversible chain conveyor sprocket assemblyAMERICAN LONGWALL MINING CORP·Filed 1990·Granted Dec 24, 1991·20 cites·4 claims
- 0357US5131724AConveyor pan with keyed deckAMERICAN LONGWALL MINING CORP·Filed 1991·Granted Jul 21, 1992·17 cites·11 claims
- 0454US5272289AScraper chain conveyorAMERICAN LONGWALL MINING CORP·Filed 1992·Granted Dec 21, 1993·25 cites·11 claims
- 0544US5232068ARemote lubrication system for conveyor bearingAMERICAN LONGWALL MINING CORP·Filed 1992·Granted Aug 3, 1993·11 cites·10 claims
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