Inventor · disambiguated record

Darwin H. Isdahl

Also filed as: ISDAHL DARWIN H

2 granted patents·77 citations·filing 1987–1991

66Inventor score

Technology areasE01B

Files withLORAM MAINTENANCE OF WAY2

Top patents by PatentIndex Score

2 records

0194US5140776AApparatus and method for measuring and maintaining the profile of a railroad track railLORAM MAINTENANCE OF WAY·Filed 1991·Granted Aug 25, 1992·56 cites·25 claims
0252US4829723ARail grinding machineLORAM MAINTENANCE OF WAY·Filed 1987·Granted May 16, 1989·21 cites·41 claims

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