Assignee
NP IND INC
6 granted patents·82 citations·filing 1979–1980
Top patents by PatentIndex Score
6 records- 0178US4254482AEcho location system which provides for measuring liquid level and flow rate and flow volume of flowing liquidsNP IND INC·Filed 1979·Granted Mar 3, 1981·25 cites·6 claims
- 0264US4202211AFlow measuring systemNP IND INC·Filed 1979·Granted May 13, 1980·17 cites·5 claims
- 0360US4326173ADigital phase locked loop frequency control systemNP IND INC·Filed 1980·Granted Apr 20, 1982·19 cites·3 claims
- 0458US4217777AFlow measuring systemNP IND INC·Filed 1979·Granted Aug 19, 1980·14 cites·6 claims
- 0532US4317184ADual slope compensation apparatusNP IND INC·Filed 1980·Granted Feb 23, 1982·4 cites·15 claims
- 0630US4272761AOperations control systemNP IND INC·Filed 1980·Granted Jun 9, 1981·3 cites·14 claims
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