by measuring fluid level in front of an obstacle

Patents Grantslast 30 patents

  • Information Patent Grant

    Flow meter

    • Patent number 3,954,009
    • Issue date May 4, 1976
    • Instrumentation Specialties Company
    • Louis Franklin Lederer
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1662248

    • Patent number 1,662,248
    • Issue date Mar 13, 1928
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents