Richard P. Johnson

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Kingwood, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for composting using improved charging and discharging se...
- Patent number 5,248,612
- Issue date Sep 28, 1993
- Ashbrook-Simon-Hartley Corporation
- Richard P. Johnson
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method and apparatus for composting using improved charging and dis...
- Patent number 5,076,827
- Issue date Dec 31, 1991
- Ashbrook-Simon-Hartley Corporation
- Richard P. Johnson
- C05 - FERTILISERS MANUFACTURE THEREOF