Assignee
ZEMAN DAVID G
3 granted patents·30 citations·filing 1976–1999
Top patents by PatentIndex Score
3 records- 0156US4801089ASprinkler structures having replaceable water distribution structuresZEMAN DAVID G·Filed 1987·Granted Jan 31, 1989·24 cites·10 claims
- 0237USD429997STubing reelZEMAN DAVID G·Filed 1999·Granted Aug 29, 2000·3 cites·1 claims
- 0331US4134551AEmitter for drip irrigationZEMAN DAVID G·Filed 1976·Granted Jan 16, 1979·3 cites·2 claims
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