Assignee
HELLMUTH OBATA & KASSABAUM INC
US·2 granted patents·62 citations·filing 1996–1997
Top patents by PatentIndex Score
2 records- 0160US5921032AConvertible sports and exhibition facility and conversion methodHELLMUTH OBATA & KASSABAUM INC·Filed 1997·Granted Jul 13, 1999·35 cites·16 claims
- 0253US5794383AReconfigurable seating system for multi-purpose stadiumHELLMUTH OBATA & KASSABAUM INC·Filed 1996·Granted Aug 18, 1998·27 cites·28 claims
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