Ronald D. Hart

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Seattle, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for recovering reusable wood shavings from animal stalls
- Patent number 5,927,513
- Issue date Jul 27, 1999
- Ronald D. Hart
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Apparatus for obtaining a soil core sample
- Patent number 5,474,141
- Issue date Dec 12, 1995
- Ronald D. Hart
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Apparatus for obtaining a soil core sample
- Patent number 5,322,133
- Issue date Jun 21, 1994
- Ronald D. Hart
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS