Assignee

SUMNER CYRIL R

US·2 granted patents·167 citations·filing 1987–1990

Technology mixE02D1 E21B1 G02B1 H02G1

Top patents by PatentIndex Score

2 records

0189US5105742AFluid sensitive, polarity sensitive safety detonatorSUMNER CYRIL R·Filed 1990·Granted Apr 21, 1992·142 cites·28 claims
0258US4776138ABuried vault for underground optical fiber systemsSUMNER CYRIL R·Filed 1987·Granted Oct 11, 1988·25 cites·7 claims

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