Assignee
ZEMAN DAVID
US·10 granted patents·207 citations·filing 1985–1992
Top patents by PatentIndex Score
10 records- 0197US5141360AIrrigation tubingZEMAN DAVID·Filed 1989·Granted Aug 25, 1992·82 cites·14 claims
- 0276US5224796AFlat sided irrigation tubingZEMAN DAVID·Filed 1992·Granted Jul 6, 1993·35 cites·23 claims
- 0373USD340626SStake for attachment to drip or related irrigation tubingZEMAN DAVID·Filed 1992·Granted Oct 26, 1993·16 cites·1 claims
- 0462USD341755SStake for attachment to drip or related irrigation tubingZEMAN DAVID·Filed 1992·Granted Nov 30, 1993·11 cites·1 claims
- 0557US5263791AIrrigation tubing with improved discharge holesZEMAN DAVID·Filed 1992·Granted Nov 23, 1993·23 cites·16 claims
- 0654USD339508SStake for attachment to drip or related irrigation tubingZEMAN DAVID·Filed 1990·Granted Sep 21, 1993·8 cites·1 claims
- 0745US4852806ASpray structures for use in watering plantsZEMAN DAVID·Filed 1987·Granted Aug 1, 1989·14 cites·18 claims
- 0841US4688599ADistribution fittingZEMAN DAVID·Filed 1985·Granted Aug 25, 1987·10 cites·9 claims
- 0937US5292073AIrrigation tubes with thickened wall sectionsZEMAN DAVID·Filed 1992·Granted Mar 8, 1994·6 cites·3 claims
- 1029US5267691ASpray structures with integral stakesZEMAN DAVID·Filed 1992·Granted Dec 7, 1993·2 cites·4 claims
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