Assignee
WAYSS & FREYTAG AG
DE·7 granted patents·52 citations·filing 1976–1992
Top patents by PatentIndex Score
7 records- 0169US4075855ATunnel construction and tunnel tubbingWAYSS & FREYTAG AG·Filed 1976·Granted Feb 28, 1978·22 cites·13 claims
- 0243US4948089AConcrete mold with arrangement for mounting tubular componentsWAYSS & FREYTAG AG·Filed 1987·Granted Aug 14, 1990·13 cites·6 claims
- 0334US5196209AMaking a prestressed concrete beamWAYSS & FREYTAG AG·Filed 1991·Granted Mar 23, 1993·5 cites·4 claims
- 0432US5124093AProcess for the production of concrete switch cross tiesWAYSS & FREYTAG AG·Filed 1989·Granted Jun 23, 1992·7 cites·2 claims
- 0525US5227112AMethod of making concrete switch cross tiesWAYSS & FREYTAG AG·Filed 1992·Granted Jul 13, 1993·1 cites·7 claims
- 0625US5127160AMethod of fastening construction components in a casing for series-produced finished partsWAYSS & FREYTAG AG·Filed 1989·Granted Jul 7, 1992·1 cites·4 claims
- 0717US5200210AAssembly for fastening components for producing concrete bodiesWAYSS & FREYTAG AG·Filed 1992·Granted Apr 6, 1993·3 cites·11 claims
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