Individual holder
SPRUNGER POWELL L
US·5 granted patents·49 citations·filing 1990–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0143US5219435ADisposable trailer hitchSPRUNGER POWELL L·Filed 1991·Granted Jun 15, 1993·11 cites·7 claims
- 0242US5197658AExpandable and reversible containersSPRUNGER POWELL L·Filed 1990·Granted Mar 30, 1993·16 cites·15 claims
- 0339US5145031AElectric ladderSPRUNGER POWELL L·Filed 1990·Granted Sep 8, 1992·13 cites·12 claims
- 0433US5210386ADevice for making and warming coffee by a microwave heating deviceSPRUNGER POWELL L·Filed 1990·Granted May 11, 1993·6 cites·5 claims
- 0527US5211127AMobile boatSPRUNGER POWELL L·Filed 1992·Granted May 18, 1993·3 cites·6 claims
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