-
Tamper detection mechanism
-
Patent number 6,774,807
-
Issue date Aug 10, 2004
-
Cadence Design Systems, Inc.
-
Carl Robert Lehfeldt
-
G08 - SIGNALLING
-
-
Optically coupled gas meter
-
Patent number 6,087,959
-
Issue date Jul 11, 2000
-
Diablo Research Company, LLC
-
Charles A. Glorioso
-
G01 - MEASURING TESTING
-
-
-
-
-
Fault-tolerant HVAC system
-
Patent number 5,801,940
-
Issue date Sep 1, 1998
-
Gas Research Institute
-
Robert M. Russ
-
G05 - CONTROLLING REGULATING
-
-