David C. Macke Sr.

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St. Louis, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Three wire interface for field wiring of on/off sensors
- Patent number 6,559,653
- Issue date May 6, 2003
- BECS Technology, Inc.
- David C. Macke
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Proximity detector for hard-to-detect materials
- Patent number 6,446,012
- Issue date Sep 3, 2002
- BFCS Technology, Inc.
- David C. Macke
- G08 - SIGNALLING
Information Patent Grant
Time-domain reflectometry user input device
- Patent number 6,137,282
- Issue date Oct 24, 2000
- BECS Technology, Inc.
- David C. Macke
- G01 - MEASURING TESTING
Information Patent Grant
Oil level control system
- Patent number 6,125,642
- Issue date Oct 3, 2000
- Sporlan Valve Company
- G. Thomas Seener
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
THREE WIRE INTERFACE FOR FIELD WIRING OF ON/ OFF SENSORS
- Publication number 20020017908
- Publication date Feb 14, 2002
- DAVID C. MACKE
- H03 - BASIC ELECTRONIC CIRCUITRY