Inventor · disambiguated record
Franz Penningsfeld
Also filed as: PENNINGSFELD FRANZ
2 granted patents·38 citations·filing 1988–1992
63Inventor score
Technology areasA01G
Top patents by PatentIndex Score
2 records- 0165US5413618AMethod for the production of a peat substitute, installation for implementing said method, drying device, application of said method, and peat substitute produced according to said methodIUP INST FUER UMWELTPFLEGE AG·Filed 1992·Granted May 9, 1995·27 cites·22 claims
- 0240US4945676AMethod and apparatus for supplementing the feed solution of hydrocultures with desalinated waterSICK OPTIK ELEKTRONIK ERWIN·Filed 1988·Granted Aug 7, 1990·11 cites·10 claims
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