Inventor · disambiguated record

Friedhelm Wojtek

Also filed as: WOJTEK FRIEDHELM

2 granted patents·19 citations·filing 1982–1993

58Inventor score

Technology areasE01B

Files withBUTZBACHER WEICHENBAU GMBH1 KLOECKNER WERKE AG1

Top patents by PatentIndex Score

2 records

0138US4464831AMethod and device for fabricating insulated joints for railroad tracksKLOECKNER WERKE AG·Filed 1982·Granted Aug 14, 1984·12 cites·15 claims
0237US5451018ARailway tongue and rail junctureBUTZBACHER WEICHENBAU GMBH·Filed 1993·Granted Sep 19, 1995·7 cites·11 claims

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