Assignee
PRINGLE DAVID A
US·4 granted patents·21 citations·filing 1991–1995
Top patents by PatentIndex Score
4 records- 0148US5179399ATheatre in the round projection apparatus and methodPRINGLE DAVID A·Filed 1991·Granted Jan 12, 1993·6 cites·11 claims
- 0235US5982112ALow pressure xenon lamp and driver circuitry for use in theatrical productions and the likePRINGLE DAVID A·Filed 1992·Granted Nov 9, 1999·7 cites·23 claims
- 0335US5150012ALow pressure xenon lamp and driver circuitry for use in theatrical productions and the likePRINGLE DAVID A·Filed 1991·Granted Sep 22, 1992·7 cites·10 claims
- 0427US6140778ALow pressure xenon lamp and driver circuitry for use in theatrical productions and the likePRINGLE DAVID A·Filed 1995·Granted Oct 31, 2000·1 cites·21 claims
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