Assignee
LUDELL MFG CO
US·3 granted patents·57 citations·filing 1985–1991
Technology mixF24H3
Top patents by PatentIndex Score
3 records- 0163US4574775ADirect contact water heaterLUDELL MFG CO·Filed 1985·Granted Mar 11, 1986·26 cites·7 claims
- 0259US4753220ADirect contact water heaterLUDELL MFG CO·Filed 1987·Granted Jun 28, 1988·21 cites·13 claims
- 0337US5168861ADirect contact water heaterLUDELL MFG CO·Filed 1991·Granted Dec 8, 1992·10 cites·5 claims
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