Assignee
FRANCESVILLE DRAIN TILE CORP
4 granted patents·74 citations·filing 1975–1983
Top patents by PatentIndex Score
4 records- 0180US4003122AApparatus and method for applying filter to a drainage tubingFRANCESVILLE DRAIN TILE CORP·Filed 1975·Granted Jan 18, 1977·31 cites·13 claims
- 0273US4104774AApparatus for applying filter to a drainage tubingFRANCESVILLE DRAIN TILE CORP·Filed 1976·Granted Aug 8, 1978·24 cites·14 claims
- 0351US4557510ACorrugated tube couplingFRANCESVILLE DRAIN TILE CORP·Filed 1983·Granted Dec 10, 1985·19 cites·6 claims
- 0424US4089108AFilter sleeve stuffing machineFRANCESVILLE DRAIN TILE CORP·Filed 1977·Granted May 16, 1978·0 cites·15 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →