Inventor · disambiguated record
Ragnar M. Hardmark
Also filed as: HAERDMARK RAGNAR · HAERDMARK RAGNAR M · HARDMARK RAGNAR · HARDMARK RAGNAR M
7 granted patents·123 citations·filing 1973–1986
85Inventor score
Top patents by PatentIndex Score
7 records- 0185US4098111ARoadway friction measuring method and apparatusSAAB SCANIA AB·Filed 1977·Granted Jul 4, 1978·56 cites·11 claims
- 0278US4212063AApparatus for measuring the action of forces between wheeled vehicles and substructureSAAB SCANIA AB·Filed 1978·Granted Jul 8, 1980·32 cites·9 claims
- 0356US3940945AFlexible shaftSAAB SCANIA AB·Filed 1973·Granted Mar 2, 1976·16 cites·15 claims
- 0453USD286524SAnti skid chain unit for vehicle tiresONSPOT AB·Filed 1984·Granted Nov 4, 1986·6 cites·1 claims
- 0536US4621712AAnti-skid device for motor vehiclesONSPOT AB·Filed 1985·Granted Nov 11, 1986·6 cites·14 claims
- 0631US4328622AApparatus for measuring the evenness of a road surfaceSAAB SCANIA AB·Filed 1980·Granted May 11, 1982·5 cites·10 claims
- 0725US4732239AAnti-skid deviceONSPOT AB·Filed 1986·Granted Mar 22, 1988·2 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →