Assignee
SURFACE SYSTEMS
US·7 granted patents·310 citations·filing 1975–1995
Top patents by PatentIndex Score
7 records- 0186US3986110AWater depth measuring deviceSURFACE SYSTEMS·Filed 1975·Granted Oct 12, 1976·78 cites·15 claims
- 0282US4897597AApparatus and methods for detecting wet and icy conditionsSURFACE SYSTEMS·Filed 1988·Granted Jan 30, 1990·68 cites·45 claims
- 0380US4135151AApparatus for detecting wet and icy surface conditionsSURFACE SYSTEMS·Filed 1977·Granted Jan 16, 1979·50 cites·17 claims
- 0474US4679160AUltrasonic depth measurement apparatus and methodsSURFACE SYSTEMS·Filed 1984·Granted Jul 7, 1987·32 cites·70 claims
- 0568US5774374ARoad surface measuring device and methodSURFACE SYSTEMS·Filed 1995·Granted Jun 30, 1998·38 cites·32 claims
- 0667US4750117AUltrasonic depth measurement apparatus and methodsSURFACE SYSTEMS·Filed 1984·Granted Jun 7, 1988·24 cites·26 claims
- 0763US4281286AApparatus and method for detecting wet and icy conditions on the surface of a pathwaySURFACE SYSTEMS·Filed 1979·Granted Jul 28, 1981·20 cites·25 claims
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