Assignee
CHANG JIH CHENG
TW·3 granted patents·64 citations·filing 1988–1990
Technology mixB60Q3
Top patents by PatentIndex Score
3 records- 0173US4965546AWarning device to alert passers-by before opening an automobile doorCHANG JIH CHENG·Filed 1989·Granted Oct 23, 1990·30 cites·3 claims
- 0255US4833448AWarning device to alert passers-by before opening an automobile doorCHANG JIH CHENG·Filed 1988·Granted May 23, 1989·17 cites·1 claims
- 0353US5041813A"Automobile disabled" signCHANG JIH CHENG·Filed 1990·Granted Aug 20, 1991·17 cites·1 claims
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